Home / 400,948.55-553,308.97-219,666.90

Finding the Fourth Proportional to 400,948.55, 553,308.97 and 219,666.90

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Solution

The fourth proportional to 400,948.55, 553,308.97 and 219,666.90 is: 303,140.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,948.55 : 553,308.97 = 219,666.90 : x
  2. Step 2: Convert to fraction form
    400,948.55/553,308.97 = 219,666.90/x
  3. Step 3: Cross multiply
    400,948.55x = 553,308.97 × 219,666.90
  4. Step 4: Simplify right side
    400,948.55x = 121,543,665,083.76
  5. Step 5: Solve for x
    x = 121,543,665,083.76/400,948.55
  6. Step 6: Final answer
    x = 303,140.31

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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.