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Finding the Fourth Proportional to 403,967.72, 557,472.30 and 220,205.84

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Solution

The fourth proportional to 403,967.72, 557,472.30 and 220,205.84 is: 303,882.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,967.72 : 557,472.30 = 220,205.84 : x
  2. Step 2: Convert to fraction form
    403,967.72/557,472.30 = 220,205.84/x
  3. Step 3: Cross multiply
    403,967.72x = 557,472.30 × 220,205.84
  4. Step 4: Simplify right side
    403,967.72x = 122,758,656,098.23
  5. Step 5: Solve for x
    x = 122,758,656,098.23/403,967.72
  6. Step 6: Final answer
    x = 303,882.34

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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.