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Finding the Fourth Proportional to 400,951, 553,312.38 and 222,103

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Solution

The fourth proportional to 400,951, 553,312.38 and 222,103 is: 306,502.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,951 : 553,312.38 = 222,103 : x
  2. Step 2: Convert to fraction form
    400,951/553,312.38 = 222,103/x
  3. Step 3: Cross multiply
    400,951x = 553,312.38 × 222,103
  4. Step 4: Simplify right side
    400,951x = 122,892,339,535.14
  5. Step 5: Solve for x
    x = 122,892,339,535.14/400,951
  6. Step 6: Final answer
    x = 306,502.14

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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.