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Finding the Fourth Proportional to 362,780.72, 544,327.84 and 138,208.62

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Solution

The fourth proportional to 362,780.72, 544,327.84 and 138,208.62 is: 207,372.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,780.72 : 544,327.84 = 138,208.62 : x
  2. Step 2: Convert to fraction form
    362,780.72/544,327.84 = 138,208.62/x
  3. Step 3: Cross multiply
    362,780.72x = 544,327.84 × 138,208.62
  4. Step 4: Simplify right side
    362,780.72x = 75,230,799,593.98
  5. Step 5: Solve for x
    x = 75,230,799,593.98/362,780.72
  6. Step 6: Final answer
    x = 207,372.65

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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.