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Finding the Fourth Proportional to 401,753.85, 554,428.68 and 220,455.20

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Solution

The fourth proportional to 401,753.85, 554,428.68 and 220,455.20 is: 304,232.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,753.85 : 554,428.68 = 220,455.20 : x
  2. Step 2: Convert to fraction form
    401,753.85/554,428.68 = 220,455.20/x
  3. Step 3: Cross multiply
    401,753.85x = 554,428.68 × 220,455.20
  4. Step 4: Simplify right side
    401,753.85x = 122,226,681,660.72
  5. Step 5: Solve for x
    x = 122,226,681,660.72/401,753.85
  6. Step 6: Final answer
    x = 304,232.76

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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.