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Finding the Fourth Proportional to 487,393.10, 730,830.45 and 206,593.10

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Solution

The fourth proportional to 487,393.10, 730,830.45 and 206,593.10 is: 309,779.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,393.10 : 730,830.45 = 206,593.10 : x
  2. Step 2: Convert to fraction form
    487,393.10/730,830.45 = 206,593.10/x
  3. Step 3: Cross multiply
    487,393.10x = 730,830.45 × 206,593.10
  4. Step 4: Simplify right side
    487,393.10x = 150,984,528,239.90
  5. Step 5: Solve for x
    x = 150,984,528,239.90/487,393.10
  6. Step 6: Final answer
    x = 309,779.78

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1.5x scale

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.