Home / 280,187.10-386,687.98-171,355.10

Finding the Fourth Proportional to 280,187.10, 386,687.98 and 171,355.10

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Solution

The fourth proportional to 280,187.10, 386,687.98 and 171,355.10 is: 236,488.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,187.10 : 386,687.98 = 171,355.10 : x
  2. Step 2: Convert to fraction form
    280,187.10/386,687.98 = 171,355.10/x
  3. Step 3: Cross multiply
    280,187.10x = 386,687.98 × 171,355.10
  4. Step 4: Simplify right side
    280,187.10x = 66,260,957,481.70
  5. Step 5: Solve for x
    x = 66,260,957,481.70/280,187.10
  6. Step 6: Final answer
    x = 236,488.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.