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Finding the Fourth Proportional to 221,338.80, 331,508.68 and 155,074.68

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Solution

The fourth proportional to 221,338.80, 331,508.68 and 155,074.68 is: 232,262.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,338.80 : 331,508.68 = 155,074.68 : x
  2. Step 2: Convert to fraction form
    221,338.80/331,508.68 = 155,074.68/x
  3. Step 3: Cross multiply
    221,338.80x = 331,508.68 × 155,074.68
  4. Step 4: Simplify right side
    221,338.80x = 51,408,602,080.54
  5. Step 5: Solve for x
    x = 51,408,602,080.54/221,338.80
  6. Step 6: Final answer
    x = 232,262.04

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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.