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Finding the Fourth Proportional to 285,691.36, 428,532.27 and 69,552.37

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Solution

The fourth proportional to 285,691.36, 428,532.27 and 69,552.37 is: 104,327.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,691.36 : 428,532.27 = 69,552.37 : x
  2. Step 2: Convert to fraction form
    285,691.36/428,532.27 = 69,552.37/x
  3. Step 3: Cross multiply
    285,691.36x = 428,532.27 × 69,552.37
  4. Step 4: Simplify right side
    285,691.36x = 29,805,434,999.98
  5. Step 5: Solve for x
    x = 29,805,434,999.98/285,691.36
  6. Step 6: Final answer
    x = 104,327.39

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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.