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Finding the Fourth Proportional to 238,721.76, 357,760.08 and 90,897.12

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Solution

The fourth proportional to 238,721.76, 357,760.08 and 90,897.12 is: 136,222.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,721.76 : 357,760.08 = 90,897.12 : x
  2. Step 2: Convert to fraction form
    238,721.76/357,760.08 = 90,897.12/x
  3. Step 3: Cross multiply
    238,721.76x = 357,760.08 × 90,897.12
  4. Step 4: Simplify right side
    238,721.76x = 32,519,360,922.97
  5. Step 5: Solve for x
    x = 32,519,360,922.97/238,721.76
  6. Step 6: Final answer
    x = 136,222.86

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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.