Home / 458,220.10-687,330.15-121,260.10

Finding the Fourth Proportional to 458,220.10, 687,330.15 and 121,260.10

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Solution

The fourth proportional to 458,220.10, 687,330.15 and 121,260.10 is: 181,890.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,220.10 : 687,330.15 = 121,260.10 : x
  2. Step 2: Convert to fraction form
    458,220.10/687,330.15 = 121,260.10/x
  3. Step 3: Cross multiply
    458,220.10x = 687,330.15 × 121,260.10
  4. Step 4: Simplify right side
    458,220.10x = 83,345,722,722.02
  5. Step 5: Solve for x
    x = 83,345,722,722.02/458,220.10
  6. Step 6: Final answer
    x = 181,890.15

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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.