Home / 408,142.17-612,219.43-155,436.65

Finding the Fourth Proportional to 408,142.17, 612,219.43 and 155,436.65

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Solution

The fourth proportional to 408,142.17, 612,219.43 and 155,436.65 is: 233,157.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,142.17 : 612,219.43 = 155,436.65 : x
  2. Step 2: Convert to fraction form
    408,142.17/612,219.43 = 155,436.65/x
  3. Step 3: Cross multiply
    408,142.17x = 612,219.43 × 155,436.65
  4. Step 4: Simplify right side
    408,142.17x = 95,161,336,693.13
  5. Step 5: Solve for x
    x = 95,161,336,693.13/408,142.17
  6. Step 6: Final answer
    x = 233,157.33

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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.