Home / 256,892,826.38-354,512,282.65-139,418,128.67

Finding the Fourth Proportional to 256,892,826.38, 354,512,282.65 and 139,418,128.67

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Solution

The fourth proportional to 256,892,826.38, 354,512,282.65 and 139,418,128.67 is: 192,397,116.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,892,826.38 : 354,512,282.65 = 139,418,128.67 : x
  2. Step 2: Convert to fraction form
    256,892,826.38/354,512,282.65 = 139,418,128.67/x
  3. Step 3: Cross multiply
    256,892,826.38x = 354,512,282.65 × 139,418,128.67
  4. Step 4: Simplify right side
    256,892,826.38x = 49,425,439,035,471,992
  5. Step 5: Solve for x
    x = 49,425,439,035,471,992/256,892,826.38
  6. Step 6: Final answer
    x = 192,397,116.47

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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.