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Finding the Fourth Proportional to 308,185.44, 425,295.88 and 187,304.15

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Solution

The fourth proportional to 308,185.44, 425,295.88 and 187,304.15 is: 258,479.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,185.44 : 425,295.88 = 187,304.15 : x
  2. Step 2: Convert to fraction form
    308,185.44/425,295.88 = 187,304.15/x
  3. Step 3: Cross multiply
    308,185.44x = 425,295.88 × 187,304.15
  4. Step 4: Simplify right side
    308,185.44x = 79,659,680,707.16
  5. Step 5: Solve for x
    x = 79,659,680,707.16/308,185.44
  6. Step 6: Final answer
    x = 258,479.70

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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.