Home / 280,360.19-386,905.82-159,518.87

Finding the Fourth Proportional to 280,360.19, 386,905.82 and 159,518.87

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Solution

The fourth proportional to 280,360.19, 386,905.82 and 159,518.87 is: 220,141.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,360.19 : 386,905.82 = 159,518.87 : x
  2. Step 2: Convert to fraction form
    280,360.19/386,905.82 = 159,518.87/x
  3. Step 3: Cross multiply
    280,360.19x = 386,905.82 × 159,518.87
  4. Step 4: Simplify right side
    280,360.19x = 61,718,777,921.60
  5. Step 5: Solve for x
    x = 61,718,777,921.60/280,360.19
  6. Step 6: Final answer
    x = 220,141.02

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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.