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Finding the Fourth Proportional to 331,715.70, 497,278.96 and 129,264.91

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Solution

The fourth proportional to 331,715.70, 497,278.96 and 129,264.91 is: 193,782.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,715.70 : 497,278.96 = 129,264.91 : x
  2. Step 2: Convert to fraction form
    331,715.70/497,278.96 = 129,264.91/x
  3. Step 3: Cross multiply
    331,715.70x = 497,278.96 × 129,264.91
  4. Step 4: Simplify right side
    331,715.70x = 64,280,718,442.93
  5. Step 5: Solve for x
    x = 64,280,718,442.93/331,715.70
  6. Step 6: Final answer
    x = 193,782.56

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1.5x scale

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.