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Finding the Fourth Proportional to 537,754.56, 806,626.37 and 138,393.78

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Solution

The fourth proportional to 537,754.56, 806,626.37 and 138,393.78 is: 207,589.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,754.56 : 806,626.37 = 138,393.78 : x
  2. Step 2: Convert to fraction form
    537,754.56/806,626.37 = 138,393.78/x
  3. Step 3: Cross multiply
    537,754.56x = 806,626.37 × 138,393.78
  4. Step 4: Simplify right side
    537,754.56x = 111,632,071,700.01
  5. Step 5: Solve for x
    x = 111,632,071,700.01/537,754.56
  6. Step 6: Final answer
    x = 207,589.26

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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.