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Finding the Fourth Proportional to 252,042, 347,817.99 and 138,867.18

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Solution

The fourth proportional to 252,042, 347,817.99 and 138,867.18 is: 191,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,042 : 347,817.99 = 138,867.18 : x
  2. Step 2: Convert to fraction form
    252,042/347,817.99 = 138,867.18/x
  3. Step 3: Cross multiply
    252,042x = 347,817.99 × 138,867.18
  4. Step 4: Simplify right side
    252,042x = 48,300,503,424.57
  5. Step 5: Solve for x
    x = 48,300,503,424.57/252,042
  6. Step 6: Final answer
    x = 191,636.72

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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.