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Finding the Fourth Proportional to 247,309.38, 341,286.95 and 139,877.11

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Solution

The fourth proportional to 247,309.38, 341,286.95 and 139,877.11 is: 193,030.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,309.38 : 341,286.95 = 139,877.11 : x
  2. Step 2: Convert to fraction form
    247,309.38/341,286.95 = 139,877.11/x
  3. Step 3: Cross multiply
    247,309.38x = 341,286.95 × 139,877.11
  4. Step 4: Simplify right side
    247,309.38x = 47,738,232,246.71
  5. Step 5: Solve for x
    x = 47,738,232,246.71/247,309.38
  6. Step 6: Final answer
    x = 193,030.41

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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.