Home / 400,972.56-553,342.11-219,691.35

Finding the Fourth Proportional to 400,972.56, 553,342.11 and 219,691.35

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Solution

The fourth proportional to 400,972.56, 553,342.11 and 219,691.35 is: 303,174.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,972.56 : 553,342.11 = 219,691.35 : x
  2. Step 2: Convert to fraction form
    400,972.56/553,342.11 = 219,691.35/x
  3. Step 3: Cross multiply
    400,972.56x = 553,342.11 × 219,691.35
  4. Step 4: Simplify right side
    400,972.56x = 121,564,476,541.10
  5. Step 5: Solve for x
    x = 121,564,476,541.10/400,972.56
  6. Step 6: Final answer
    x = 303,174.06

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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.