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Finding the Fourth Proportional to 201,640.44, 278,261.10 and 112,216.44

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Solution

The fourth proportional to 201,640.44, 278,261.10 and 112,216.44 is: 154,857.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,640.44 : 278,261.10 = 112,216.44 : x
  2. Step 2: Convert to fraction form
    201,640.44/278,261.10 = 112,216.44/x
  3. Step 3: Cross multiply
    201,640.44x = 278,261.10 × 112,216.44
  4. Step 4: Simplify right side
    201,640.44x = 31,225,470,032.48
  5. Step 5: Solve for x
    x = 31,225,470,032.48/201,640.44
  6. Step 6: Final answer
    x = 154,857.18

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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.