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Finding the Fourth Proportional to 438,666.88, 658,005.72 and 154,365.92

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Solution

The fourth proportional to 438,666.88, 658,005.72 and 154,365.92 is: 231,550.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,666.88 : 658,005.72 = 154,365.92 : x
  2. Step 2: Convert to fraction form
    438,666.88/658,005.72 = 154,365.92/x
  3. Step 3: Cross multiply
    438,666.88x = 658,005.72 × 154,365.92
  4. Step 4: Simplify right side
    438,666.88x = 101,573,658,333.06
  5. Step 5: Solve for x
    x = 101,573,658,333.06/438,666.88
  6. Step 6: Final answer
    x = 231,550.78

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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.