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Finding the Fourth Proportional to 201,632.44, 278,220.20 and 115,575.57

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Solution

The fourth proportional to 201,632.44, 278,220.20 and 115,575.57 is: 159,475.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,632.44 : 278,220.20 = 115,575.57 : x
  2. Step 2: Convert to fraction form
    201,632.44/278,220.20 = 115,575.57/x
  3. Step 3: Cross multiply
    201,632.44x = 278,220.20 × 115,575.57
  4. Step 4: Simplify right side
    201,632.44x = 32,155,458,665.96
  5. Step 5: Solve for x
    x = 32,155,458,665.96/201,632.44
  6. Step 6: Final answer
    x = 159,475.62

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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.