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Finding the Fourth Proportional to 408,527.70, 612,791.55 and 198,575.70

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Solution

The fourth proportional to 408,527.70, 612,791.55 and 198,575.70 is: 297,863.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,527.70 : 612,791.55 = 198,575.70 : x
  2. Step 2: Convert to fraction form
    408,527.70/612,791.55 = 198,575.70/x
  3. Step 3: Cross multiply
    408,527.70x = 612,791.55 × 198,575.70
  4. Step 4: Simplify right side
    408,527.70x = 121,685,510,995.34
  5. Step 5: Solve for x
    x = 121,685,510,995.34/408,527.70
  6. Step 6: Final answer
    x = 297,863.55

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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.