Home / 458,188.20-687,347.10-142,612.20

Finding the Fourth Proportional to 458,188.20, 687,347.10 and 142,612.20

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Solution

The fourth proportional to 458,188.20, 687,347.10 and 142,612.20 is: 213,938.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,188.20 : 687,347.10 = 142,612.20 : x
  2. Step 2: Convert to fraction form
    458,188.20/687,347.10 = 142,612.20/x
  3. Step 3: Cross multiply
    458,188.20x = 687,347.10 × 142,612.20
  4. Step 4: Simplify right side
    458,188.20x = 98,024,082,094.62
  5. Step 5: Solve for x
    x = 98,024,082,094.62/458,188.20
  6. Step 6: Final answer
    x = 213,938.47

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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.