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Finding the Fourth Proportional to 379,909.44, 569,339.28 and 329,870.88

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Solution

The fourth proportional to 379,909.44, 569,339.28 and 329,870.88 is: 494,350.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,909.44 : 569,339.28 = 329,870.88 : x
  2. Step 2: Convert to fraction form
    379,909.44/569,339.28 = 329,870.88/x
  3. Step 3: Cross multiply
    379,909.44x = 569,339.28 × 329,870.88
  4. Step 4: Simplify right side
    379,909.44x = 187,808,449,312.17
  5. Step 5: Solve for x
    x = 187,808,449,312.17/379,909.44
  6. Step 6: Final answer
    x = 494,350.57

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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.