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Finding the Fourth Proportional to 285,761.03, 428,637.29 and 69,622.25

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Solution

The fourth proportional to 285,761.03, 428,637.29 and 69,622.25 is: 104,432.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,761.03 : 428,637.29 = 69,622.25 : x
  2. Step 2: Convert to fraction form
    285,761.03/428,637.29 = 69,622.25/x
  3. Step 3: Cross multiply
    285,761.03x = 428,637.29 × 69,622.25
  4. Step 4: Simplify right side
    285,761.03x = 29,842,690,072.40
  5. Step 5: Solve for x
    x = 29,842,690,072.40/285,761.03
  6. Step 6: Final answer
    x = 104,432.33

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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.