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Finding the Fourth Proportional to 253,135.71, 379,516.09 and 153,272.43

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Solution

The fourth proportional to 253,135.71, 379,516.09 and 153,272.43 is: 229,795.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,135.71 : 379,516.09 = 153,272.43 : x
  2. Step 2: Convert to fraction form
    253,135.71/379,516.09 = 153,272.43/x
  3. Step 3: Cross multiply
    253,135.71x = 379,516.09 × 153,272.43
  4. Step 4: Simplify right side
    253,135.71x = 58,169,353,338.40
  5. Step 5: Solve for x
    x = 58,169,353,338.40/253,135.71
  6. Step 6: Final answer
    x = 229,795.13

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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.