Home / 278,626,756,782.43-384,498,897,742.85-161,309,348,101.72

Finding the Fourth Proportional to 278,626,756,782.43, 384,498,897,742.85 and 161,309,348,101.72

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Solution

The fourth proportional to 278,626,756,782.43, 384,498,897,742.85 and 161,309,348,101.72 is: 222,603,411,305.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,626,756,782.43 : 384,498,897,742.85 = 161,309,348,101.72 : x
  2. Step 2: Convert to fraction form
    278,626,756,782.43/384,498,897,742.85 = 161,309,348,101.72/x
  3. Step 3: Cross multiply
    278,626,756,782.43x = 384,498,897,742.85 × 161,309,348,101.72
  4. Step 4: Simplify right side
    278,626,756,782.43x = 62,023,266,540,729,025,953,792
  5. Step 5: Solve for x
    x = 62,023,266,540,729,025,953,792/278,626,756,782.43
  6. Step 6: Final answer
    x = 222,603,411,305.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.