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Finding the Fourth Proportional to 486,297.47, 729,483.10 and 131,306.33

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Solution

The fourth proportional to 486,297.47, 729,483.10 and 131,306.33 is: 196,969.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,297.47 : 729,483.10 = 131,306.33 : x
  2. Step 2: Convert to fraction form
    486,297.47/729,483.10 = 131,306.33/x
  3. Step 3: Cross multiply
    486,297.47x = 729,483.10 × 131,306.33
  4. Step 4: Simplify right side
    486,297.47x = 95,785,750,153.46
  5. Step 5: Solve for x
    x = 95,785,750,153.46/486,297.47
  6. Step 6: Final answer
    x = 196,969.46

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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.