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Finding the Fourth Proportional to 279,354.32, 385,517.70 and 158,500.70

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Solution

The fourth proportional to 279,354.32, 385,517.70 and 158,500.70 is: 218,735.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,354.32 : 385,517.70 = 158,500.70 : x
  2. Step 2: Convert to fraction form
    279,354.32/385,517.70 = 158,500.70/x
  3. Step 3: Cross multiply
    279,354.32x = 385,517.70 × 158,500.70
  4. Step 4: Simplify right side
    279,354.32x = 61,104,825,312.39
  5. Step 5: Solve for x
    x = 61,104,825,312.39/279,354.32
  6. Step 6: Final answer
    x = 218,735.92

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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.