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Finding the Fourth Proportional to 408,566.20, 612,426.62 and 155,778.68

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Solution

The fourth proportional to 408,566.20, 612,426.62 and 155,778.68 is: 233,506.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,566.20 : 612,426.62 = 155,778.68 : x
  2. Step 2: Convert to fraction form
    408,566.20/612,426.62 = 155,778.68/x
  3. Step 3: Cross multiply
    408,566.20x = 612,426.62 × 155,778.68
  4. Step 4: Simplify right side
    408,566.20x = 95,403,010,460.46
  5. Step 5: Solve for x
    x = 95,403,010,460.46/408,566.20
  6. Step 6: Final answer
    x = 233,506.86

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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.