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Finding the Fourth Proportional to 401,763.85, 554,438.29 and 220,487.52

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Solution

The fourth proportional to 401,763.85, 554,438.29 and 220,487.52 is: 304,275.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,763.85 : 554,438.29 = 220,487.52 : x
  2. Step 2: Convert to fraction form
    401,763.85/554,438.29 = 220,487.52/x
  3. Step 3: Cross multiply
    401,763.85x = 554,438.29 × 220,487.52
  4. Step 4: Simplify right side
    401,763.85x = 122,246,722,997.89
  5. Step 5: Solve for x
    x = 122,246,722,997.89/401,763.85
  6. Step 6: Final answer
    x = 304,275.07

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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.