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Finding the Fourth Proportional to 271,332.70, 406,999.05 and 218,844.70

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Solution

The fourth proportional to 271,332.70, 406,999.05 and 218,844.70 is: 328,267.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,332.70 : 406,999.05 = 218,844.70 : x
  2. Step 2: Convert to fraction form
    271,332.70/406,999.05 = 218,844.70/x
  3. Step 3: Cross multiply
    271,332.70x = 406,999.05 × 218,844.70
  4. Step 4: Simplify right side
    271,332.70x = 89,069,584,997.54
  5. Step 5: Solve for x
    x = 89,069,584,997.54/271,332.70
  6. Step 6: Final answer
    x = 328,267.05

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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.