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Finding the Fourth Proportional to 308,815.20, 462,445.20 and 203,061.60

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Solution

The fourth proportional to 308,815.20, 462,445.20 and 203,061.60 is: 304,081.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,815.20 : 462,445.20 = 203,061.60 : x
  2. Step 2: Convert to fraction form
    308,815.20/462,445.20 = 203,061.60/x
  3. Step 3: Cross multiply
    308,815.20x = 462,445.20 × 203,061.60
  4. Step 4: Simplify right side
    308,815.20x = 93,904,862,224.32
  5. Step 5: Solve for x
    x = 93,904,862,224.32/308,815.20
  6. Step 6: Final answer
    x = 304,081.09

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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.