Home / 400,948.30-553,308.62-219,666.65

Finding the Fourth Proportional to 400,948.30, 553,308.62 and 219,666.65

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Solution

The fourth proportional to 400,948.30, 553,308.62 and 219,666.65 is: 303,139.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,948.30 : 553,308.62 = 219,666.65 : x
  2. Step 2: Convert to fraction form
    400,948.30/553,308.62 = 219,666.65/x
  3. Step 3: Cross multiply
    400,948.30x = 553,308.62 × 219,666.65
  4. Step 4: Simplify right side
    400,948.30x = 121,543,451,454.63
  5. Step 5: Solve for x
    x = 121,543,451,454.63/400,948.30
  6. Step 6: Final answer
    x = 303,139.96

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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.