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Finding the Fourth Proportional to 252,362.16, 378,611.28 and 83,909.70

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Solution

The fourth proportional to 252,362.16, 378,611.28 and 83,909.70 is: 125,887.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,362.16 : 378,611.28 = 83,909.70 : x
  2. Step 2: Convert to fraction form
    252,362.16/378,611.28 = 83,909.70/x
  3. Step 3: Cross multiply
    252,362.16x = 378,611.28 × 83,909.70
  4. Step 4: Simplify right side
    252,362.16x = 31,769,158,921.42
  5. Step 5: Solve for x
    x = 31,769,158,921.42/252,362.16
  6. Step 6: Final answer
    x = 125,887.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.