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Finding the Fourth Proportional to 215,233.60, 322,735.20 and 90,433.60

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Solution

The fourth proportional to 215,233.60, 322,735.20 and 90,433.60 is: 135,602.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,233.60 : 322,735.20 = 90,433.60 : x
  2. Step 2: Convert to fraction form
    215,233.60/322,735.20 = 90,433.60/x
  3. Step 3: Cross multiply
    215,233.60x = 322,735.20 × 90,433.60
  4. Step 4: Simplify right side
    215,233.60x = 29,186,105,982.72
  5. Step 5: Solve for x
    x = 29,186,105,982.72/215,233.60
  6. Step 6: Final answer
    x = 135,602.00

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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.