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Finding the Fourth Proportional to 280,232.70, 386,729.66 and 159,391.37

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Solution

The fourth proportional to 280,232.70, 386,729.66 and 159,391.37 is: 219,964.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,232.70 : 386,729.66 = 159,391.37 : x
  2. Step 2: Convert to fraction form
    280,232.70/386,729.66 = 159,391.37/x
  3. Step 3: Cross multiply
    280,232.70x = 386,729.66 × 159,391.37
  4. Step 4: Simplify right side
    280,232.70x = 61,641,367,596.43
  5. Step 5: Solve for x
    x = 61,641,367,596.43/280,232.70
  6. Step 6: Final answer
    x = 219,964.93

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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.