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Finding the Fourth Proportional to 279,876.33, 386,225.42 and 152,552.43

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Solution

The fourth proportional to 279,876.33, 386,225.42 and 152,552.43 is: 210,520.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,876.33 : 386,225.42 = 152,552.43 : x
  2. Step 2: Convert to fraction form
    279,876.33/386,225.42 = 152,552.43/x
  3. Step 3: Cross multiply
    279,876.33x = 386,225.42 × 152,552.43
  4. Step 4: Simplify right side
    279,876.33x = 58,919,625,586.01
  5. Step 5: Solve for x
    x = 58,919,625,586.01/279,876.33
  6. Step 6: Final answer
    x = 210,520.22

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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.