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Finding the Fourth Proportional to 280,179.18, 386,645.46 and 159,320.46

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Solution

The fourth proportional to 280,179.18, 386,645.46 and 159,320.46 is: 219,861.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,179.18 : 386,645.46 = 159,320.46 : x
  2. Step 2: Convert to fraction form
    280,179.18/386,645.46 = 159,320.46/x
  3. Step 3: Cross multiply
    280,179.18x = 386,645.46 × 159,320.46
  4. Step 4: Simplify right side
    280,179.18x = 61,600,532,544.11
  5. Step 5: Solve for x
    x = 61,600,532,544.11/280,179.18
  6. Step 6: Final answer
    x = 219,861.21

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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.