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Finding the Fourth Proportional to 412,267.92, 618,440.88 and 131,718.48

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Solution

The fourth proportional to 412,267.92, 618,440.88 and 131,718.48 is: 197,590.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,267.92 : 618,440.88 = 131,718.48 : x
  2. Step 2: Convert to fraction form
    412,267.92/618,440.88 = 131,718.48/x
  3. Step 3: Cross multiply
    412,267.92x = 618,440.88 × 131,718.48
  4. Step 4: Simplify right side
    412,267.92x = 81,460,092,683.46
  5. Step 5: Solve for x
    x = 81,460,092,683.46/412,267.92
  6. Step 6: Final answer
    x = 197,590.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.