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Finding the Fourth Proportional to 253,694.40, 380,584.76 and 87,443.52

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Solution

The fourth proportional to 253,694.40, 380,584.76 and 87,443.52 is: 131,180.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,694.40 : 380,584.76 = 87,443.52 : x
  2. Step 2: Convert to fraction form
    253,694.40/380,584.76 = 87,443.52/x
  3. Step 3: Cross multiply
    253,694.40x = 380,584.76 × 87,443.52
  4. Step 4: Simplify right side
    253,694.40x = 33,279,671,072.76
  5. Step 5: Solve for x
    x = 33,279,671,072.76/253,694.40
  6. Step 6: Final answer
    x = 131,180.16

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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.