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Finding the Fourth Proportional to 442,898.76, 664,248.78 and 127,285.32

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Solution

The fourth proportional to 442,898.76, 664,248.78 and 127,285.32 is: 190,899.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,898.76 : 664,248.78 = 127,285.32 : x
  2. Step 2: Convert to fraction form
    442,898.76/664,248.78 = 127,285.32/x
  3. Step 3: Cross multiply
    442,898.76x = 664,248.78 × 127,285.32
  4. Step 4: Simplify right side
    442,898.76x = 84,549,118,521.91
  5. Step 5: Solve for x
    x = 84,549,118,521.91/442,898.76
  6. Step 6: Final answer
    x = 190,899.42

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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.