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Finding the Fourth Proportional to 272,944.80, 409,474.80 and 85,975.20

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Solution

The fourth proportional to 272,944.80, 409,474.80 and 85,975.20 is: 128,980.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,944.80 : 409,474.80 = 85,975.20 : x
  2. Step 2: Convert to fraction form
    272,944.80/409,474.80 = 85,975.20/x
  3. Step 3: Cross multiply
    272,944.80x = 409,474.80 × 85,975.20
  4. Step 4: Simplify right side
    272,944.80x = 35,204,677,824.96
  5. Step 5: Solve for x
    x = 35,204,677,824.96/272,944.80
  6. Step 6: Final answer
    x = 128,980.94

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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.