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Finding the Fourth Proportional to 408,031.70, 612,047.55 and 108,511.70

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Solution

The fourth proportional to 408,031.70, 612,047.55 and 108,511.70 is: 162,767.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,031.70 : 612,047.55 = 108,511.70 : x
  2. Step 2: Convert to fraction form
    408,031.70/612,047.55 = 108,511.70/x
  3. Step 3: Cross multiply
    408,031.70x = 612,047.55 × 108,511.70
  4. Step 4: Simplify right side
    408,031.70x = 66,414,320,131.34
  5. Step 5: Solve for x
    x = 66,414,320,131.34/408,031.70
  6. Step 6: Final answer
    x = 162,767.55

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1.5x scale

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.