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Finding the Fourth Proportional to 308,348.64, 425,652.28 and 187,528.73

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Solution

The fourth proportional to 308,348.64, 425,652.28 and 187,528.73 is: 258,869.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,348.64 : 425,652.28 = 187,528.73 : x
  2. Step 2: Convert to fraction form
    308,348.64/425,652.28 = 187,528.73/x
  3. Step 3: Cross multiply
    308,348.64x = 425,652.28 × 187,528.73
  4. Step 4: Simplify right side
    308,348.64x = 79,822,031,958.83
  5. Step 5: Solve for x
    x = 79,822,031,958.83/308,348.64
  6. Step 6: Final answer
    x = 258,869.42

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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.