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Finding the Fourth Proportional to 486,574.47, 729,806.30 and 131,560.81

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Solution

The fourth proportional to 486,574.47, 729,806.30 and 131,560.81 is: 197,326.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,574.47 : 729,806.30 = 131,560.81 : x
  2. Step 2: Convert to fraction form
    486,574.47/729,806.30 = 131,560.81/x
  3. Step 3: Cross multiply
    486,574.47x = 729,806.30 × 131,560.81
  4. Step 4: Simplify right side
    486,574.47x = 96,013,906,722.17
  5. Step 5: Solve for x
    x = 96,013,906,722.17/486,574.47
  6. Step 6: Final answer
    x = 197,326.23

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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.