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Finding the Fourth Proportional to 442,895.20, 664,342.80 and 307,592.80

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Solution

The fourth proportional to 442,895.20, 664,342.80 and 307,592.80 is: 461,389.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,895.20 : 664,342.80 = 307,592.80 : x
  2. Step 2: Convert to fraction form
    442,895.20/664,342.80 = 307,592.80/x
  3. Step 3: Cross multiply
    442,895.20x = 664,342.80 × 307,592.80
  4. Step 4: Simplify right side
    442,895.20x = 204,347,062,011.84
  5. Step 5: Solve for x
    x = 204,347,062,011.84/442,895.20
  6. Step 6: Final answer
    x = 461,389.20

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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.