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Finding the Fourth Proportional to 372,552.36, 514,107.94 and 211,397.78

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Solution

The fourth proportional to 372,552.36, 514,107.94 and 211,397.78 is: 291,720.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,552.36 : 514,107.94 = 211,397.78 : x
  2. Step 2: Convert to fraction form
    372,552.36/514,107.94 = 211,397.78/x
  3. Step 3: Cross multiply
    372,552.36x = 514,107.94 × 211,397.78
  4. Step 4: Simplify right side
    372,552.36x = 108,681,277,196.37
  5. Step 5: Solve for x
    x = 108,681,277,196.37/372,552.36
  6. Step 6: Final answer
    x = 291,720.81

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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.