Home / 427,279.90-640,977.45-146,883.10

Finding the Fourth Proportional to 427,279.90, 640,977.45 and 146,883.10

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Solution

The fourth proportional to 427,279.90, 640,977.45 and 146,883.10 is: 220,344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,279.90 : 640,977.45 = 146,883.10 : x
  2. Step 2: Convert to fraction form
    427,279.90/640,977.45 = 146,883.10/x
  3. Step 3: Cross multiply
    427,279.90x = 640,977.45 × 146,883.10
  4. Step 4: Simplify right side
    427,279.90x = 94,148,754,886.10
  5. Step 5: Solve for x
    x = 94,148,754,886.10/427,279.90
  6. Step 6: Final answer
    x = 220,344.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.