Home / 221,013.76-331,411.20-178,789.12

Finding the Fourth Proportional to 221,013.76, 331,411.20 and 178,789.12

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Solution

The fourth proportional to 221,013.76, 331,411.20 and 178,789.12 is: 268,095.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,013.76 : 331,411.20 = 178,789.12 : x
  2. Step 2: Convert to fraction form
    221,013.76/331,411.20 = 178,789.12/x
  3. Step 3: Cross multiply
    221,013.76x = 331,411.20 × 178,789.12
  4. Step 4: Simplify right side
    221,013.76x = 59,252,716,806.14
  5. Step 5: Solve for x
    x = 59,252,716,806.14/221,013.76
  6. Step 6: Final answer
    x = 268,095.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.