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Finding the Fourth Proportional to 215,185.80, 322,778.70 and 109,969.80

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Solution

The fourth proportional to 215,185.80, 322,778.70 and 109,969.80 is: 164,954.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,185.80 : 322,778.70 = 109,969.80 : x
  2. Step 2: Convert to fraction form
    215,185.80/322,778.70 = 109,969.80/x
  3. Step 3: Cross multiply
    215,185.80x = 322,778.70 × 109,969.80
  4. Step 4: Simplify right side
    215,185.80x = 35,495,909,083.26
  5. Step 5: Solve for x
    x = 35,495,909,083.26/215,185.80
  6. Step 6: Final answer
    x = 164,954.70

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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.