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Finding the Fourth Proportional to 486,227.90, 728,429.37 and 186,505.02

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Solution

The fourth proportional to 486,227.90, 728,429.37 and 186,505.02 is: 279,407.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,227.90 : 728,429.37 = 186,505.02 : x
  2. Step 2: Convert to fraction form
    486,227.90/728,429.37 = 186,505.02/x
  3. Step 3: Cross multiply
    486,227.90x = 728,429.37 × 186,505.02
  4. Step 4: Simplify right side
    486,227.90x = 135,855,734,220.44
  5. Step 5: Solve for x
    x = 135,855,734,220.44/486,227.90
  6. Step 6: Final answer
    x = 279,407.53

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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.