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Finding the Fourth Proportional to 318,659.12, 439,762.11 and 175,432.49

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Solution

The fourth proportional to 318,659.12, 439,762.11 and 175,432.49 is: 242,103.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,659.12 : 439,762.11 = 175,432.49 : x
  2. Step 2: Convert to fraction form
    318,659.12/439,762.11 = 175,432.49/x
  3. Step 3: Cross multiply
    318,659.12x = 439,762.11 × 175,432.49
  4. Step 4: Simplify right side
    318,659.12x = 77,148,561,964.95
  5. Step 5: Solve for x
    x = 77,148,561,964.95/318,659.12
  6. Step 6: Final answer
    x = 242,103.73

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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.