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Finding the Fourth Proportional to 247,411.65, 341,391.79 and 138,510.34

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Solution

The fourth proportional to 247,411.65, 341,391.79 and 138,510.34 is: 191,123.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,411.65 : 341,391.79 = 138,510.34 : x
  2. Step 2: Convert to fraction form
    247,411.65/341,391.79 = 138,510.34/x
  3. Step 3: Cross multiply
    247,411.65x = 341,391.79 × 138,510.34
  4. Step 4: Simplify right side
    247,411.65x = 47,286,292,906.11
  5. Step 5: Solve for x
    x = 47,286,292,906.11/247,411.65
  6. Step 6: Final answer
    x = 191,123.95

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1.5x scale

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.