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Finding the Fourth Proportional to 308,575.19, 425,647.56 and 203,799.78

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Solution

The fourth proportional to 308,575.19, 425,647.56 and 203,799.78 is: 281,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,575.19 : 425,647.56 = 203,799.78 : x
  2. Step 2: Convert to fraction form
    308,575.19/425,647.56 = 203,799.78/x
  3. Step 3: Cross multiply
    308,575.19x = 425,647.56 × 203,799.78
  4. Step 4: Simplify right side
    308,575.19x = 86,746,875,938.30
  5. Step 5: Solve for x
    x = 86,746,875,938.30/308,575.19
  6. Step 6: Final answer
    x = 281,120.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.