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Finding the Fourth Proportional to 356,789.80, 534,731.10 and 146,189.80

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Solution

The fourth proportional to 356,789.80, 534,731.10 and 146,189.80 is: 219,098.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,789.80 : 534,731.10 = 146,189.80 : x
  2. Step 2: Convert to fraction form
    356,789.80/534,731.10 = 146,189.80/x
  3. Step 3: Cross multiply
    356,789.80x = 534,731.10 × 146,189.80
  4. Step 4: Simplify right side
    356,789.80x = 78,172,232,562.78
  5. Step 5: Solve for x
    x = 78,172,232,562.78/356,789.80
  6. Step 6: Final answer
    x = 219,098.84

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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.