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Finding the Fourth Proportional to 218,712.13, 301,822.73 and 118,110.13

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Solution

The fourth proportional to 218,712.13, 301,822.73 and 118,110.13 is: 162,991.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,712.13 : 301,822.73 = 118,110.13 : x
  2. Step 2: Convert to fraction form
    218,712.13/301,822.73 = 118,110.13/x
  3. Step 3: Cross multiply
    218,712.13x = 301,822.73 × 118,110.13
  4. Step 4: Simplify right side
    218,712.13x = 35,648,321,877.25
  5. Step 5: Solve for x
    x = 35,648,321,877.25/218,712.13
  6. Step 6: Final answer
    x = 162,991.97

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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.