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Finding the Fourth Proportional to 279,528.80, 385,836.78 and 158,750.50

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Solution

The fourth proportional to 279,528.80, 385,836.78 and 158,750.50 is: 219,125.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,528.80 : 385,836.78 = 158,750.50 : x
  2. Step 2: Convert to fraction form
    279,528.80/385,836.78 = 158,750.50/x
  3. Step 3: Cross multiply
    279,528.80x = 385,836.78 × 158,750.50
  4. Step 4: Simplify right side
    279,528.80x = 61,251,781,743.39
  5. Step 5: Solve for x
    x = 61,251,781,743.39/279,528.80
  6. Step 6: Final answer
    x = 219,125.12

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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.