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Finding the Fourth Proportional to 307,632.80, 461,103.60 and 157,815.20

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Solution

The fourth proportional to 307,632.80, 461,103.60 and 157,815.20 is: 236,545.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,632.80 : 461,103.60 = 157,815.20 : x
  2. Step 2: Convert to fraction form
    307,632.80/461,103.60 = 157,815.20/x
  3. Step 3: Cross multiply
    307,632.80x = 461,103.60 × 157,815.20
  4. Step 4: Simplify right side
    307,632.80x = 72,769,156,854.72
  5. Step 5: Solve for x
    x = 72,769,156,854.72/307,632.80
  6. Step 6: Final answer
    x = 236,545.51

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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.