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Finding the Fourth Proportional to 376,722.90, 564,906.15 and 218,999.70

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Solution

The fourth proportional to 376,722.90, 564,906.15 and 218,999.70 is: 328,395.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,722.90 : 564,906.15 = 218,999.70 : x
  2. Step 2: Convert to fraction form
    376,722.90/564,906.15 = 218,999.70/x
  3. Step 3: Cross multiply
    376,722.90x = 564,906.15 × 218,999.70
  4. Step 4: Simplify right side
    376,722.90x = 123,714,277,378.16
  5. Step 5: Solve for x
    x = 123,714,277,378.16/376,722.90
  6. Step 6: Final answer
    x = 328,395.96

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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.