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Finding the Fourth Proportional to 400,876.44, 553,187.88 and 219,553.98

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Solution

The fourth proportional to 400,876.44, 553,187.88 and 219,553.98 is: 302,972.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,876.44 : 553,187.88 = 219,553.98 : x
  2. Step 2: Convert to fraction form
    400,876.44/553,187.88 = 219,553.98/x
  3. Step 3: Cross multiply
    400,876.44x = 553,187.88 × 219,553.98
  4. Step 4: Simplify right side
    400,876.44x = 121,454,600,741.76
  5. Step 5: Solve for x
    x = 121,454,600,741.76/400,876.44
  6. Step 6: Final answer
    x = 302,972.66

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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.