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Finding the Fourth Proportional to 247,123.48, 341,026.70 and 139,689.72

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Solution

The fourth proportional to 247,123.48, 341,026.70 and 139,689.72 is: 192,769.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,123.48 : 341,026.70 = 139,689.72 : x
  2. Step 2: Convert to fraction form
    247,123.48/341,026.70 = 139,689.72/x
  3. Step 3: Cross multiply
    247,123.48x = 341,026.70 × 139,689.72
  4. Step 4: Simplify right side
    247,123.48x = 47,637,924,235.52
  5. Step 5: Solve for x
    x = 47,637,924,235.52/247,123.48
  6. Step 6: Final answer
    x = 192,769.72

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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.