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Finding the Fourth Proportional to 218,769.05, 328,153.50 and 52,557.05

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Solution

The fourth proportional to 218,769.05, 328,153.50 and 52,557.05 is: 78,835.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,769.05 : 328,153.50 = 52,557.05 : x
  2. Step 2: Convert to fraction form
    218,769.05/328,153.50 = 52,557.05/x
  3. Step 3: Cross multiply
    218,769.05x = 328,153.50 × 52,557.05
  4. Step 4: Simplify right side
    218,769.05x = 17,246,780,875.38
  5. Step 5: Solve for x
    x = 17,246,780,875.38/218,769.05
  6. Step 6: Final answer
    x = 78,835.56

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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.