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Finding the Fourth Proportional to 331,512.40, 497,486.40 and 181,857.52

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Solution

The fourth proportional to 331,512.40, 497,486.40 and 181,857.52 is: 272,905.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,512.40 : 497,486.40 = 181,857.52 : x
  2. Step 2: Convert to fraction form
    331,512.40/497,486.40 = 181,857.52/x
  3. Step 3: Cross multiply
    331,512.40x = 497,486.40 × 181,857.52
  4. Step 4: Simplify right side
    331,512.40x = 90,471,642,937.73
  5. Step 5: Solve for x
    x = 90,471,642,937.73/331,512.40
  6. Step 6: Final answer
    x = 272,905.76

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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.