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Finding the Fourth Proportional to 247,781.60, 371,686.48 and 70,274.56

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Solution

The fourth proportional to 247,781.60, 371,686.48 and 70,274.56 is: 105,415.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,781.60 : 371,686.48 = 70,274.56 : x
  2. Step 2: Convert to fraction form
    247,781.60/371,686.48 = 70,274.56/x
  3. Step 3: Cross multiply
    247,781.60x = 371,686.48 × 70,274.56
  4. Step 4: Simplify right side
    247,781.60x = 26,120,103,839.95
  5. Step 5: Solve for x
    x = 26,120,103,839.95/247,781.60
  6. Step 6: Final answer
    x = 105,415.83

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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.