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Finding the Fourth Proportional to 201,966.33, 278,700.86 and 111,317.31

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Solution

The fourth proportional to 201,966.33, 278,700.86 and 111,317.31 is: 153,610.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,966.33 : 278,700.86 = 111,317.31 : x
  2. Step 2: Convert to fraction form
    201,966.33/278,700.86 = 111,317.31/x
  3. Step 3: Cross multiply
    201,966.33x = 278,700.86 × 111,317.31
  4. Step 4: Simplify right side
    201,966.33x = 31,024,230,308.18
  5. Step 5: Solve for x
    x = 31,024,230,308.18/201,966.33
  6. Step 6: Final answer
    x = 153,610.90

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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.