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Finding the Fourth Proportional to 331,498.80, 497,500.92 and 242,978.76

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Solution

The fourth proportional to 331,498.80, 497,500.92 and 242,978.76 is: 364,653.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,498.80 : 497,500.92 = 242,978.76 : x
  2. Step 2: Convert to fraction form
    331,498.80/497,500.92 = 242,978.76/x
  3. Step 3: Cross multiply
    331,498.80x = 497,500.92 × 242,978.76
  4. Step 4: Simplify right side
    331,498.80x = 120,882,156,640.46
  5. Step 5: Solve for x
    x = 120,882,156,640.46/331,498.80
  6. Step 6: Final answer
    x = 364,653.38

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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.