Home / 401,760.38-554,436.13-220,489.18

Finding the Fourth Proportional to 401,760.38, 554,436.13 and 220,489.18

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Solution

The fourth proportional to 401,760.38, 554,436.13 and 220,489.18 is: 304,278.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,760.38 : 554,436.13 = 220,489.18 : x
  2. Step 2: Convert to fraction form
    401,760.38/554,436.13 = 220,489.18/x
  3. Step 3: Cross multiply
    401,760.38x = 554,436.13 × 220,489.18
  4. Step 4: Simplify right side
    401,760.38x = 122,247,167,666.07
  5. Step 5: Solve for x
    x = 122,247,167,666.07/401,760.38
  6. Step 6: Final answer
    x = 304,278.80

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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.