Home / 458,211.10-687,316.65-121,251.10

Finding the Fourth Proportional to 458,211.10, 687,316.65 and 121,251.10

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Solution

The fourth proportional to 458,211.10, 687,316.65 and 121,251.10 is: 181,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,211.10 : 687,316.65 = 121,251.10 : x
  2. Step 2: Convert to fraction form
    458,211.10/687,316.65 = 121,251.10/x
  3. Step 3: Cross multiply
    458,211.10x = 687,316.65 × 121,251.10
  4. Step 4: Simplify right side
    458,211.10x = 83,337,899,860.82
  5. Step 5: Solve for x
    x = 83,337,899,860.82/458,211.10
  6. Step 6: Final answer
    x = 181,876.65

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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.