Home / 458,260.10-687,390.15-121,300.10

Finding the Fourth Proportional to 458,260.10, 687,390.15 and 121,300.10

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Solution

The fourth proportional to 458,260.10, 687,390.15 and 121,300.10 is: 181,950.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,260.10 : 687,390.15 = 121,300.10 : x
  2. Step 2: Convert to fraction form
    458,260.10/687,390.15 = 121,300.10/x
  3. Step 3: Cross multiply
    458,260.10x = 687,390.15 × 121,300.10
  4. Step 4: Simplify right side
    458,260.10x = 83,380,493,934.02
  5. Step 5: Solve for x
    x = 83,380,493,934.02/458,260.10
  6. Step 6: Final answer
    x = 181,950.15

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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.