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Finding the Fourth Proportional to 200,079.21, 276,118.16 and 115,223.61

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Solution

The fourth proportional to 200,079.21, 276,118.16 and 115,223.61 is: 159,013.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,079.21 : 276,118.16 = 115,223.61 : x
  2. Step 2: Convert to fraction form
    200,079.21/276,118.16 = 115,223.61/x
  3. Step 3: Cross multiply
    200,079.21x = 276,118.16 × 115,223.61
  4. Step 4: Simplify right side
    200,079.21x = 31,815,330,605.64
  5. Step 5: Solve for x
    x = 31,815,330,605.64/200,079.21
  6. Step 6: Final answer
    x = 159,013.68

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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.