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Finding the Fourth Proportional to 247,560.79, 341,642.03 and 140,128.51

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Solution

The fourth proportional to 247,560.79, 341,642.03 and 140,128.51 is: 193,381.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,560.79 : 341,642.03 = 140,128.51 : x
  2. Step 2: Convert to fraction form
    247,560.79/341,642.03 = 140,128.51/x
  3. Step 3: Cross multiply
    247,560.79x = 341,642.03 × 140,128.51
  4. Step 4: Simplify right side
    247,560.79x = 47,873,788,617.28
  5. Step 5: Solve for x
    x = 47,873,788,617.28/247,560.79
  6. Step 6: Final answer
    x = 193,381.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.