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Finding the Fourth Proportional to 238,765.44, 358,151.04 and 80,990.40

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Solution

The fourth proportional to 238,765.44, 358,151.04 and 80,990.40 is: 121,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,765.44 : 358,151.04 = 80,990.40 : x
  2. Step 2: Convert to fraction form
    238,765.44/358,151.04 = 80,990.40/x
  3. Step 3: Cross multiply
    238,765.44x = 358,151.04 × 80,990.40
  4. Step 4: Simplify right side
    238,765.44x = 29,006,795,990.02
  5. Step 5: Solve for x
    x = 29,006,795,990.02/238,765.44
  6. Step 6: Final answer
    x = 121,486.58

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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.