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Finding the Fourth Proportional to 347,984.88, 480,211.20 and 202,781.58

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Solution

The fourth proportional to 347,984.88, 480,211.20 and 202,781.58 is: 279,833.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,984.88 : 480,211.20 = 202,781.58 : x
  2. Step 2: Convert to fraction form
    347,984.88/480,211.20 = 202,781.58/x
  3. Step 3: Cross multiply
    347,984.88x = 480,211.20 × 202,781.58
  4. Step 4: Simplify right side
    347,984.88x = 97,377,985,869.70
  5. Step 5: Solve for x
    x = 97,377,985,869.70/347,984.88
  6. Step 6: Final answer
    x = 279,833.96

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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.