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Finding the Fourth Proportional to 247,345.88, 371,000.18 and 78,859.40

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Solution

The fourth proportional to 247,345.88, 371,000.18 and 78,859.40 is: 118,283.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,345.88 : 371,000.18 = 78,859.40 : x
  2. Step 2: Convert to fraction form
    247,345.88/371,000.18 = 78,859.40/x
  3. Step 3: Cross multiply
    247,345.88x = 371,000.18 × 78,859.40
  4. Step 4: Simplify right side
    247,345.88x = 29,256,849,936.84
  5. Step 5: Solve for x
    x = 29,256,849,936.84/247,345.88
  6. Step 6: Final answer
    x = 118,283.15

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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.