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Finding the Fourth Proportional to 331,718.52, 497,283.11 and 129,267.76

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Solution

The fourth proportional to 331,718.52, 497,283.11 and 129,267.76 is: 193,786.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,718.52 : 497,283.11 = 129,267.76 : x
  2. Step 2: Convert to fraction form
    331,718.52/497,283.11 = 129,267.76/x
  3. Step 3: Cross multiply
    331,718.52x = 497,283.11 × 129,267.76
  4. Step 4: Simplify right side
    331,718.52x = 64,282,673,715.53
  5. Step 5: Solve for x
    x = 64,282,673,715.53/331,718.52
  6. Step 6: Final answer
    x = 193,786.81

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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.