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Finding the Fourth Proportional to 247,213.26, 341,152.40 and 139,787.12

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Solution

The fourth proportional to 247,213.26, 341,152.40 and 139,787.12 is: 192,905.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,213.26 : 341,152.40 = 139,787.12 : x
  2. Step 2: Convert to fraction form
    247,213.26/341,152.40 = 139,787.12/x
  3. Step 3: Cross multiply
    247,213.26x = 341,152.40 × 139,787.12
  4. Step 4: Simplify right side
    247,213.26x = 47,688,709,072.39
  5. Step 5: Solve for x
    x = 47,688,709,072.39/247,213.26
  6. Step 6: Final answer
    x = 192,905.14

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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.