Home / 401,712.12-554,344.17-220,419.54

Finding the Fourth Proportional to 401,712.12, 554,344.17 and 220,419.54

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Solution

The fourth proportional to 401,712.12, 554,344.17 and 220,419.54 is: 304,168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,712.12 : 554,344.17 = 220,419.54 : x
  2. Step 2: Convert to fraction form
    401,712.12/554,344.17 = 220,419.54/x
  3. Step 3: Cross multiply
    401,712.12x = 554,344.17 × 220,419.54
  4. Step 4: Simplify right side
    401,712.12x = 122,188,286,953.08
  5. Step 5: Solve for x
    x = 122,188,286,953.08/401,712.12
  6. Step 6: Final answer
    x = 304,168.78

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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.