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Finding the Fourth Proportional to 247,274.70, 341,257.43 and 138,389.96

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Solution

The fourth proportional to 247,274.70, 341,257.43 and 138,389.96 is: 190,988.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,274.70 : 341,257.43 = 138,389.96 : x
  2. Step 2: Convert to fraction form
    247,274.70/341,257.43 = 138,389.96/x
  3. Step 3: Cross multiply
    247,274.70x = 341,257.43 × 138,389.96
  4. Step 4: Simplify right side
    247,274.70x = 47,226,599,689.17
  5. Step 5: Solve for x
    x = 47,226,599,689.17/247,274.70
  6. Step 6: Final answer
    x = 190,988.40

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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.