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Finding the Fourth Proportional to 486,012.09, 729,007.20 and 219,701.10

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Solution

The fourth proportional to 486,012.09, 729,007.20 and 219,701.10 is: 329,546.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,012.09 : 729,007.20 = 219,701.10 : x
  2. Step 2: Convert to fraction form
    486,012.09/729,007.20 = 219,701.10/x
  3. Step 3: Cross multiply
    486,012.09x = 729,007.20 × 219,701.10
  4. Step 4: Simplify right side
    486,012.09x = 160,163,683,747.92
  5. Step 5: Solve for x
    x = 160,163,683,747.92/486,012.09
  6. Step 6: Final answer
    x = 329,546.71

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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.