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Finding the Fourth Proportional to 288,863.63, 398,624.31 and 159,806.87

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Solution

The fourth proportional to 288,863.63, 398,624.31 and 159,806.87 is: 220,529.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,863.63 : 398,624.31 = 159,806.87 : x
  2. Step 2: Convert to fraction form
    288,863.63/398,624.31 = 159,806.87/x
  3. Step 3: Cross multiply
    288,863.63x = 398,624.31 × 159,806.87
  4. Step 4: Simplify right side
    288,863.63x = 63,702,901,293.89
  5. Step 5: Solve for x
    x = 63,702,901,293.89/288,863.63
  6. Step 6: Final answer
    x = 220,529.33

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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.