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Finding the Fourth Proportional to 307,824.80, 461,737.20 and 268,458.80

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Solution

The fourth proportional to 307,824.80, 461,737.20 and 268,458.80 is: 402,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,824.80 : 461,737.20 = 268,458.80 : x
  2. Step 2: Convert to fraction form
    307,824.80/461,737.20 = 268,458.80/x
  3. Step 3: Cross multiply
    307,824.80x = 461,737.20 × 268,458.80
  4. Step 4: Simplify right side
    307,824.80x = 123,957,414,627.36
  5. Step 5: Solve for x
    x = 123,957,414,627.36/307,824.80
  6. Step 6: Final answer
    x = 402,688.20

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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.