Home / 458,194.20-687,356.10-142,618.20

Finding the Fourth Proportional to 458,194.20, 687,356.10 and 142,618.20

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Solution

The fourth proportional to 458,194.20, 687,356.10 and 142,618.20 is: 213,947.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,194.20 : 687,356.10 = 142,618.20 : x
  2. Step 2: Convert to fraction form
    458,194.20/687,356.10 = 142,618.20/x
  3. Step 3: Cross multiply
    458,194.20x = 687,356.10 × 142,618.20
  4. Step 4: Simplify right side
    458,194.20x = 98,029,489,741.02
  5. Step 5: Solve for x
    x = 98,029,489,741.02/458,194.20
  6. Step 6: Final answer
    x = 213,947.47

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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.