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Finding the Fourth Proportional to 253,204.79, 379,868.94 and 75,711.81

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Solution

The fourth proportional to 253,204.79, 379,868.94 and 75,711.81 is: 113,586.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,204.79 : 379,868.94 = 75,711.81 : x
  2. Step 2: Convert to fraction form
    253,204.79/379,868.94 = 75,711.81/x
  3. Step 3: Cross multiply
    253,204.79x = 379,868.94 × 75,711.81
  4. Step 4: Simplify right side
    253,204.79x = 28,760,566,434.69
  5. Step 5: Solve for x
    x = 28,760,566,434.69/253,204.79
  6. Step 6: Final answer
    x = 113,586.19

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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.