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Finding the Fourth Proportional to 201,471.57, 278,019.81 and 110,812.90

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Solution

The fourth proportional to 201,471.57, 278,019.81 and 110,812.90 is: 152,915.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,471.57 : 278,019.81 = 110,812.90 : x
  2. Step 2: Convert to fraction form
    201,471.57/278,019.81 = 110,812.90/x
  3. Step 3: Cross multiply
    201,471.57x = 278,019.81 × 110,812.90
  4. Step 4: Simplify right side
    201,471.57x = 30,808,181,072.57
  5. Step 5: Solve for x
    x = 30,808,181,072.57/201,471.57
  6. Step 6: Final answer
    x = 152,915.78

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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.