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Finding the Fourth Proportional to 408,858.10, 613,287.15 and 302,569.90

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Solution

The fourth proportional to 408,858.10, 613,287.15 and 302,569.90 is: 453,854.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,858.10 : 613,287.15 = 302,569.90 : x
  2. Step 2: Convert to fraction form
    408,858.10/613,287.15 = 302,569.90/x
  3. Step 3: Cross multiply
    408,858.10x = 613,287.15 × 302,569.90
  4. Step 4: Simplify right side
    408,858.10x = 185,562,231,646.79
  5. Step 5: Solve for x
    x = 185,562,231,646.79/408,858.10
  6. Step 6: Final answer
    x = 453,854.85

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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.