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Finding the Fourth Proportional to 280,010.33, 420,014.67 and 69,648.26

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Solution

The fourth proportional to 280,010.33, 420,014.67 and 69,648.26 is: 104,472.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,010.33 : 420,014.67 = 69,648.26 : x
  2. Step 2: Convert to fraction form
    280,010.33/420,014.67 = 69,648.26/x
  3. Step 3: Cross multiply
    280,010.33x = 420,014.67 × 69,648.26
  4. Step 4: Simplify right side
    280,010.33x = 29,253,288,839.90
  5. Step 5: Solve for x
    x = 29,253,288,839.90/280,010.33
  6. Step 6: Final answer
    x = 104,472.18

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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.