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Finding the Fourth Proportional to 399,216.90, 598,908.55 and 133,060.10

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Solution

The fourth proportional to 399,216.90, 598,908.55 and 133,060.10 is: 199,617.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,216.90 : 598,908.55 = 133,060.10 : x
  2. Step 2: Convert to fraction form
    399,216.90/598,908.55 = 133,060.10/x
  3. Step 3: Cross multiply
    399,216.90x = 598,908.55 × 133,060.10
  4. Step 4: Simplify right side
    399,216.90x = 79,690,831,553.86
  5. Step 5: Solve for x
    x = 79,690,831,553.86/399,216.90
  6. Step 6: Final answer
    x = 199,617.88

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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.