Home / 400,845.29-553,173.68-219,545.54

Finding the Fourth Proportional to 400,845.29, 553,173.68 and 219,545.54

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Solution

The fourth proportional to 400,845.29, 553,173.68 and 219,545.54 is: 302,976.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,845.29 : 553,173.68 = 219,545.54 : x
  2. Step 2: Convert to fraction form
    400,845.29/553,173.68 = 219,545.54/x
  3. Step 3: Cross multiply
    400,845.29x = 553,173.68 × 219,545.54
  4. Step 4: Simplify right side
    400,845.29x = 121,446,813,455.32
  5. Step 5: Solve for x
    x = 121,446,813,455.32/400,845.29
  6. Step 6: Final answer
    x = 302,976.78

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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.