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Finding the Fourth Proportional to 201,960.38, 278,703.79 and 111,316.52

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Solution

The fourth proportional to 201,960.38, 278,703.79 and 111,316.52 is: 153,615.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,960.38 : 278,703.79 = 111,316.52 : x
  2. Step 2: Convert to fraction form
    201,960.38/278,703.79 = 111,316.52/x
  3. Step 3: Cross multiply
    201,960.38x = 278,703.79 × 111,316.52
  4. Step 4: Simplify right side
    201,960.38x = 31,024,336,432.08
  5. Step 5: Solve for x
    x = 31,024,336,432.08/201,960.38
  6. Step 6: Final answer
    x = 153,615.95

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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.