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Finding the Fourth Proportional to 442,887.20, 664,417.20 and 190,167.20

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Solution

The fourth proportional to 442,887.20, 664,417.20 and 190,167.20 is: 285,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,887.20 : 664,417.20 = 190,167.20 : x
  2. Step 2: Convert to fraction form
    442,887.20/664,417.20 = 190,167.20/x
  3. Step 3: Cross multiply
    442,887.20x = 664,417.20 × 190,167.20
  4. Step 4: Simplify right side
    442,887.20x = 126,350,358,555.84
  5. Step 5: Solve for x
    x = 126,350,358,555.84/442,887.20
  6. Step 6: Final answer
    x = 285,287.90

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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.