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Finding the Fourth Proportional to 330,132.98, 495,199.51 and 172,324.53

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Solution

The fourth proportional to 330,132.98, 495,199.51 and 172,324.53 is: 258,486.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,132.98 : 495,199.51 = 172,324.53 : x
  2. Step 2: Convert to fraction form
    330,132.98/495,199.51 = 172,324.53/x
  3. Step 3: Cross multiply
    330,132.98x = 495,199.51 × 172,324.53
  4. Step 4: Simplify right side
    330,132.98x = 85,335,022,386.17
  5. Step 5: Solve for x
    x = 85,335,022,386.17/330,132.98
  6. Step 6: Final answer
    x = 258,486.81

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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.