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Finding the Fourth Proportional to 279,793.89, 386,114.99 and 152,469.18

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Solution

The fourth proportional to 279,793.89, 386,114.99 and 152,469.18 is: 210,407.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,793.89 : 386,114.99 = 152,469.18 : x
  2. Step 2: Convert to fraction form
    279,793.89/386,114.99 = 152,469.18/x
  3. Step 3: Cross multiply
    279,793.89x = 386,114.99 × 152,469.18
  4. Step 4: Simplify right side
    279,793.89x = 58,870,635,148.66
  5. Step 5: Solve for x
    x = 58,870,635,148.66/279,793.89
  6. Step 6: Final answer
    x = 210,407.15

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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.