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Finding the Fourth Proportional to 516,868.28, 775,302.45 and 161,909.94

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Solution

The fourth proportional to 516,868.28, 775,302.45 and 161,909.94 is: 242,864.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,868.28 : 775,302.45 = 161,909.94 : x
  2. Step 2: Convert to fraction form
    516,868.28/775,302.45 = 161,909.94/x
  3. Step 3: Cross multiply
    516,868.28x = 775,302.45 × 161,909.94
  4. Step 4: Simplify right side
    516,868.28x = 125,529,172,351.80
  5. Step 5: Solve for x
    x = 125,529,172,351.80/516,868.28
  6. Step 6: Final answer
    x = 242,864.92

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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.