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Finding the Fourth Proportional to 279,344.57, 385,504.20 and 158,490.95

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Solution

The fourth proportional to 279,344.57, 385,504.20 and 158,490.95 is: 218,722.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,344.57 : 385,504.20 = 158,490.95 : x
  2. Step 2: Convert to fraction form
    279,344.57/385,504.20 = 158,490.95/x
  3. Step 3: Cross multiply
    279,344.57x = 385,504.20 × 158,490.95
  4. Step 4: Simplify right side
    279,344.57x = 61,098,924,959.47
  5. Step 5: Solve for x
    x = 61,098,924,959.47/279,344.57
  6. Step 6: Final answer
    x = 218,722.44

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1.5x scale

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.