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Finding the Fourth Proportional to 487,266.10, 730,899.15 and 206,746.90

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Solution

The fourth proportional to 487,266.10, 730,899.15 and 206,746.90 is: 310,120.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,266.10 : 730,899.15 = 206,746.90 : x
  2. Step 2: Convert to fraction form
    487,266.10/730,899.15 = 206,746.90/x
  3. Step 3: Cross multiply
    487,266.10x = 730,899.15 × 206,746.90
  4. Step 4: Simplify right side
    487,266.10x = 151,111,133,475.14
  5. Step 5: Solve for x
    x = 151,111,133,475.14/487,266.10
  6. Step 6: Final answer
    x = 310,120.35

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Similar ratio
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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.