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Finding the Fourth Proportional to 618,663.60, 927,455.40 and 239,842.80

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Solution

The fourth proportional to 618,663.60, 927,455.40 and 239,842.80 is: 359,554.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,663.60 : 927,455.40 = 239,842.80 : x
  2. Step 2: Convert to fraction form
    618,663.60/927,455.40 = 239,842.80/x
  3. Step 3: Cross multiply
    618,663.60x = 927,455.40 × 239,842.80
  4. Step 4: Simplify right side
    618,663.60x = 222,443,500,011.12
  5. Step 5: Solve for x
    x = 222,443,500,011.12/618,663.60
  6. Step 6: Final answer
    x = 359,554.85

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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.