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Finding the Fourth Proportional to 403,803.43, 557,252.47 and 222,521.85

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Solution

The fourth proportional to 403,803.43, 557,252.47 and 222,521.85 is: 307,082.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,803.43 : 557,252.47 = 222,521.85 : x
  2. Step 2: Convert to fraction form
    403,803.43/557,252.47 = 222,521.85/x
  3. Step 3: Cross multiply
    403,803.43x = 557,252.47 × 222,521.85
  4. Step 4: Simplify right side
    403,803.43x = 124,000,850,401.21
  5. Step 5: Solve for x
    x = 124,000,850,401.21/403,803.43
  6. Step 6: Final answer
    x = 307,082.21

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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.