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Finding the Fourth Proportional to 247,160.95, 341,068.86 and 139,724.57

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Solution

The fourth proportional to 247,160.95, 341,068.86 and 139,724.57 is: 192,812.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,160.95 : 341,068.86 = 139,724.57 : x
  2. Step 2: Convert to fraction form
    247,160.95/341,068.86 = 139,724.57/x
  3. Step 3: Cross multiply
    247,160.95x = 341,068.86 × 139,724.57
  4. Step 4: Simplify right side
    247,160.95x = 47,655,700,656.56
  5. Step 5: Solve for x
    x = 47,655,700,656.56/247,160.95
  6. Step 6: Final answer
    x = 192,812.42

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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.