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Finding the Fourth Proportional to 253,013.61, 379,582.71 and 178,279.68

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Solution

The fourth proportional to 253,013.61, 379,582.71 and 178,279.68 is: 267,463.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,013.61 : 379,582.71 = 178,279.68 : x
  2. Step 2: Convert to fraction form
    253,013.61/379,582.71 = 178,279.68/x
  3. Step 3: Cross multiply
    253,013.61x = 379,582.71 × 178,279.68
  4. Step 4: Simplify right side
    253,013.61x = 67,671,884,072.33
  5. Step 5: Solve for x
    x = 67,671,884,072.33/253,013.61
  6. Step 6: Final answer
    x = 267,463.41

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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.