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Finding the Fourth Proportional to 238,469.78, 357,482.31 and 80,587.82

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Solution

The fourth proportional to 238,469.78, 357,482.31 and 80,587.82 is: 120,806.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,469.78 : 357,482.31 = 80,587.82 : x
  2. Step 2: Convert to fraction form
    238,469.78/357,482.31 = 80,587.82/x
  3. Step 3: Cross multiply
    238,469.78x = 357,482.31 × 80,587.82
  4. Step 4: Simplify right side
    238,469.78x = 28,808,718,264.05
  5. Step 5: Solve for x
    x = 28,808,718,264.05/238,469.78
  6. Step 6: Final answer
    x = 120,806.58

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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.