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Finding the Fourth Proportional to 331,856.80, 498,044.40 and 154,385.80

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Solution

The fourth proportional to 331,856.80, 498,044.40 and 154,385.80 is: 231,699.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,856.80 : 498,044.40 = 154,385.80 : x
  2. Step 2: Convert to fraction form
    331,856.80/498,044.40 = 154,385.80/x
  3. Step 3: Cross multiply
    331,856.80x = 498,044.40 × 154,385.80
  4. Step 4: Simplify right side
    331,856.80x = 76,890,983,129.52
  5. Step 5: Solve for x
    x = 76,890,983,129.52/331,856.80
  6. Step 6: Final answer
    x = 231,699.28

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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.