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Finding the Fourth Proportional to 347,397.84, 479,375.15 and 194,426.91

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Solution

The fourth proportional to 347,397.84, 479,375.15 and 194,426.91 is: 268,290.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,397.84 : 479,375.15 = 194,426.91 : x
  2. Step 2: Convert to fraction form
    347,397.84/479,375.15 = 194,426.91/x
  3. Step 3: Cross multiply
    347,397.84x = 479,375.15 × 194,426.91
  4. Step 4: Simplify right side
    347,397.84x = 93,203,428,173.15
  5. Step 5: Solve for x
    x = 93,203,428,173.15/347,397.84
  6. Step 6: Final answer
    x = 268,290.18

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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.