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Finding the Fourth Proportional to 308,737.20, 462,449.70 and 256,249.20

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Solution

The fourth proportional to 308,737.20, 462,449.70 and 256,249.20 is: 383,829.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,737.20 : 462,449.70 = 256,249.20 : x
  2. Step 2: Convert to fraction form
    308,737.20/462,449.70 = 256,249.20/x
  3. Step 3: Cross multiply
    308,737.20x = 462,449.70 × 256,249.20
  4. Step 4: Simplify right side
    308,737.20x = 118,502,365,665.24
  5. Step 5: Solve for x
    x = 118,502,365,665.24/308,737.20
  6. Step 6: Final answer
    x = 383,829.24

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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.