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Finding the Fourth Proportional to 216,887.82, 299,305.13 and 121,394.49

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Solution

The fourth proportional to 216,887.82, 299,305.13 and 121,394.49 is: 167,524.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,887.82 : 299,305.13 = 121,394.49 : x
  2. Step 2: Convert to fraction form
    216,887.82/299,305.13 = 121,394.49/x
  3. Step 3: Cross multiply
    216,887.82x = 299,305.13 × 121,394.49
  4. Step 4: Simplify right side
    216,887.82x = 36,333,993,003.76
  5. Step 5: Solve for x
    x = 36,333,993,003.76/216,887.82
  6. Step 6: Final answer
    x = 167,524.36

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1.5x scale

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.