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Finding the Fourth Proportional to 458,508.90, 687,730.32 and 121,541.88

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Solution

The fourth proportional to 458,508.90, 687,730.32 and 121,541.88 is: 182,304.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,508.90 : 687,730.32 = 121,541.88 : x
  2. Step 2: Convert to fraction form
    458,508.90/687,730.32 = 121,541.88/x
  3. Step 3: Cross multiply
    458,508.90x = 687,730.32 × 121,541.88
  4. Step 4: Simplify right side
    458,508.90x = 83,588,036,025.80
  5. Step 5: Solve for x
    x = 83,588,036,025.80/458,508.90
  6. Step 6: Final answer
    x = 182,304.06

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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.