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Finding the Fourth Proportional to 201,478.51, 278,034.56 and 109,594.90

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Solution

The fourth proportional to 201,478.51, 278,034.56 and 109,594.90 is: 151,237.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,478.51 : 278,034.56 = 109,594.90 : x
  2. Step 2: Convert to fraction form
    201,478.51/278,034.56 = 109,594.90/x
  3. Step 3: Cross multiply
    201,478.51x = 278,034.56 × 109,594.90
  4. Step 4: Simplify right side
    201,478.51x = 30,471,169,690.67
  5. Step 5: Solve for x
    x = 30,471,169,690.67/201,478.51
  6. Step 6: Final answer
    x = 151,237.81

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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.