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Finding the Fourth Proportional to 400,876.92, 553,186.53 and 219,552.75

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Solution

The fourth proportional to 400,876.92, 553,186.53 and 219,552.75 is: 302,969.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,876.92 : 553,186.53 = 219,552.75 : x
  2. Step 2: Convert to fraction form
    400,876.92/553,186.53 = 219,552.75/x
  3. Step 3: Cross multiply
    400,876.92x = 553,186.53 × 219,552.75
  4. Step 4: Simplify right side
    400,876.92x = 121,453,623,924.46
  5. Step 5: Solve for x
    x = 121,453,623,924.46/400,876.92
  6. Step 6: Final answer
    x = 302,969.86

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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.