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Finding the Fourth Proportional to 442,898.60, 664,347.90 and 162,379.40

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Solution

The fourth proportional to 442,898.60, 664,347.90 and 162,379.40 is: 243,569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,898.60 : 664,347.90 = 162,379.40 : x
  2. Step 2: Convert to fraction form
    442,898.60/664,347.90 = 162,379.40/x
  3. Step 3: Cross multiply
    442,898.60x = 664,347.90 × 162,379.40
  4. Step 4: Simplify right side
    442,898.60x = 107,876,413,393.26
  5. Step 5: Solve for x
    x = 107,876,413,393.26/442,898.60
  6. Step 6: Final answer
    x = 243,569.10

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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.