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Finding the Fourth Proportional to 616,998.80, 925,060.80 and 280,200.80

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Solution

The fourth proportional to 616,998.80, 925,060.80 and 280,200.80 is: 420,102.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,998.80 : 925,060.80 = 280,200.80 : x
  2. Step 2: Convert to fraction form
    616,998.80/925,060.80 = 280,200.80/x
  3. Step 3: Cross multiply
    616,998.80x = 925,060.80 × 280,200.80
  4. Step 4: Simplify right side
    616,998.80x = 259,202,776,208.64
  5. Step 5: Solve for x
    x = 259,202,776,208.64/616,998.80
  6. Step 6: Final answer
    x = 420,102.56

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1.5x scale

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.