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Finding the Fourth Proportional to 400,934.96, 553,290.92 and 219,642.92

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Solution

The fourth proportional to 400,934.96, 553,290.92 and 219,642.92 is: 303,107.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,934.96 : 553,290.92 = 219,642.92 : x
  2. Step 2: Convert to fraction form
    400,934.96/553,290.92 = 219,642.92/x
  3. Step 3: Cross multiply
    400,934.96x = 553,290.92 × 219,642.92
  4. Step 4: Simplify right side
    400,934.96x = 121,526,433,278.29
  5. Step 5: Solve for x
    x = 121,526,433,278.29/400,934.96
  6. Step 6: Final answer
    x = 303,107.60

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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.