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Finding the Fourth Proportional to 280,202.40, 386,679.96 and 159,340.68

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Solution

The fourth proportional to 280,202.40, 386,679.96 and 159,340.68 is: 219,890.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,202.40 : 386,679.96 = 159,340.68 : x
  2. Step 2: Convert to fraction form
    280,202.40/386,679.96 = 159,340.68/x
  3. Step 3: Cross multiply
    280,202.40x = 386,679.96 × 159,340.68
  4. Step 4: Simplify right side
    280,202.40x = 61,613,847,768.77
  5. Step 5: Solve for x
    x = 61,613,847,768.77/280,202.40
  6. Step 6: Final answer
    x = 219,890.51

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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.