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Finding the Fourth Proportional to 247,431.88, 370,966.08 and 78,855.16

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Solution

The fourth proportional to 247,431.88, 370,966.08 and 78,855.16 is: 118,224.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,431.88 : 370,966.08 = 78,855.16 : x
  2. Step 2: Convert to fraction form
    247,431.88/370,966.08 = 78,855.16/x
  3. Step 3: Cross multiply
    247,431.88x = 370,966.08 × 78,855.16
  4. Step 4: Simplify right side
    247,431.88x = 29,252,589,592.97
  5. Step 5: Solve for x
    x = 29,252,589,592.97/247,431.88
  6. Step 6: Final answer
    x = 118,224.82

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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.