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Finding the Fourth Proportional to 486,356.32, 729,506.94 and 131,343.58

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Solution

The fourth proportional to 486,356.32, 729,506.94 and 131,343.58 is: 197,007.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,356.32 : 729,506.94 = 131,343.58 : x
  2. Step 2: Convert to fraction form
    486,356.32/729,506.94 = 131,343.58/x
  3. Step 3: Cross multiply
    486,356.32x = 729,506.94 × 131,343.58
  4. Step 4: Simplify right side
    486,356.32x = 95,816,053,134.45
  5. Step 5: Solve for x
    x = 95,816,053,134.45/486,356.32
  6. Step 6: Final answer
    x = 197,007.93

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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.