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Finding the Fourth Proportional to 201,503.67, 278,114.79 and 115,520.37

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Solution

The fourth proportional to 201,503.67, 278,114.79 and 115,520.37 is: 159,440.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,503.67 : 278,114.79 = 115,520.37 : x
  2. Step 2: Convert to fraction form
    201,503.67/278,114.79 = 115,520.37/x
  3. Step 3: Cross multiply
    201,503.67x = 278,114.79 × 115,520.37
  4. Step 4: Simplify right side
    201,503.67x = 32,127,923,443.27
  5. Step 5: Solve for x
    x = 32,127,923,443.27/201,503.67
  6. Step 6: Final answer
    x = 159,440.88

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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.