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Finding the Fourth Proportional to 318,139.93, 439,034.61 and 174,909.25

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Solution

The fourth proportional to 318,139.93, 439,034.61 and 174,909.25 is: 241,375.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,139.93 : 439,034.61 = 174,909.25 : x
  2. Step 2: Convert to fraction form
    318,139.93/439,034.61 = 174,909.25/x
  3. Step 3: Cross multiply
    318,139.93x = 439,034.61 × 174,909.25
  4. Step 4: Simplify right side
    318,139.93x = 76,791,214,359.14
  5. Step 5: Solve for x
    x = 76,791,214,359.14/318,139.93
  6. Step 6: Final answer
    x = 241,375.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.