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Finding the Fourth Proportional to 385,540.90, 532,046.37 and 215,775.03

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Solution

The fourth proportional to 385,540.90, 532,046.37 and 215,775.03 is: 297,769.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,540.90 : 532,046.37 = 215,775.03 : x
  2. Step 2: Convert to fraction form
    385,540.90/532,046.37 = 215,775.03/x
  3. Step 3: Cross multiply
    385,540.90x = 532,046.37 × 215,775.03
  4. Step 4: Simplify right side
    385,540.90x = 114,802,321,448.14
  5. Step 5: Solve for x
    x = 114,802,321,448.14/385,540.90
  6. Step 6: Final answer
    x = 297,769.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.