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Finding the Fourth Proportional to 438,668.88, 658,008.72 and 154,367.92

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Solution

The fourth proportional to 438,668.88, 658,008.72 and 154,367.92 is: 231,553.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,668.88 : 658,008.72 = 154,367.92 : x
  2. Step 2: Convert to fraction form
    438,668.88/658,008.72 = 154,367.92/x
  3. Step 3: Cross multiply
    438,668.88x = 658,008.72 × 154,367.92
  4. Step 4: Simplify right side
    438,668.88x = 101,575,437,448.26
  5. Step 5: Solve for x
    x = 101,575,437,448.26/438,668.88
  6. Step 6: Final answer
    x = 231,553.78

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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.