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Finding the Fourth Proportional to 611,751.72, 917,122.20 and 269,951.76

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Solution

The fourth proportional to 611,751.72, 917,122.20 and 269,951.76 is: 404,704.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,751.72 : 917,122.20 = 269,951.76 : x
  2. Step 2: Convert to fraction form
    611,751.72/917,122.20 = 269,951.76/x
  3. Step 3: Cross multiply
    611,751.72x = 917,122.20 × 269,951.76
  4. Step 4: Simplify right side
    611,751.72x = 247,578,752,025.07
  5. Step 5: Solve for x
    x = 247,578,752,025.07/611,751.72
  6. Step 6: Final answer
    x = 404,704.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.