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Finding the Fourth Proportional to 378,145.51, 567,216.22 and 218,117.71

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Solution

The fourth proportional to 378,145.51, 567,216.22 and 218,117.71 is: 327,175.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,145.51 : 567,216.22 = 218,117.71 : x
  2. Step 2: Convert to fraction form
    378,145.51/567,216.22 = 218,117.71/x
  3. Step 3: Cross multiply
    378,145.51x = 567,216.22 × 218,117.71
  4. Step 4: Simplify right side
    378,145.51x = 123,719,903,553.95
  5. Step 5: Solve for x
    x = 123,719,903,553.95/378,145.51
  6. Step 6: Final answer
    x = 327,175.38

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1.5x scale

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.