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Finding the Fourth Proportional to 408,043.70, 612,065.55 and 108,523.70

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Solution

The fourth proportional to 408,043.70, 612,065.55 and 108,523.70 is: 162,785.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,043.70 : 612,065.55 = 108,523.70 : x
  2. Step 2: Convert to fraction form
    408,043.70/612,065.55 = 108,523.70/x
  3. Step 3: Cross multiply
    408,043.70x = 612,065.55 × 108,523.70
  4. Step 4: Simplify right side
    408,043.70x = 66,423,618,128.54
  5. Step 5: Solve for x
    x = 66,423,618,128.54/408,043.70
  6. Step 6: Final answer
    x = 162,785.55

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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.