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Finding the Fourth Proportional to 617,016.30, 925,087.05 and 280,218.30

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Solution

The fourth proportional to 617,016.30, 925,087.05 and 280,218.30 is: 420,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,016.30 : 925,087.05 = 280,218.30 : x
  2. Step 2: Convert to fraction form
    617,016.30/925,087.05 = 280,218.30/x
  3. Step 3: Cross multiply
    617,016.30x = 925,087.05 × 280,218.30
  4. Step 4: Simplify right side
    617,016.30x = 259,226,320,503.02
  5. Step 5: Solve for x
    x = 259,226,320,503.02/617,016.30
  6. Step 6: Final answer
    x = 420,128.80

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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.