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Finding the Fourth Proportional to 308,601.50, 425,915.42 and 187,719.32

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Solution

The fourth proportional to 308,601.50, 425,915.42 and 187,719.32 is: 259,080.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,601.50 : 425,915.42 = 187,719.32 : x
  2. Step 2: Convert to fraction form
    308,601.50/425,915.42 = 187,719.32/x
  3. Step 3: Cross multiply
    308,601.50x = 425,915.42 × 187,719.32
  4. Step 4: Simplify right side
    308,601.50x = 79,952,553,146.11
  5. Step 5: Solve for x
    x = 79,952,553,146.11/308,601.50
  6. Step 6: Final answer
    x = 259,080.25

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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.