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Finding the Fourth Proportional to 479,256, 661,373.28 and 267,288

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Solution

The fourth proportional to 479,256, 661,373.28 and 267,288 is: 368,857.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,256 : 661,373.28 = 267,288 : x
  2. Step 2: Convert to fraction form
    479,256/661,373.28 = 267,288/x
  3. Step 3: Cross multiply
    479,256x = 661,373.28 × 267,288
  4. Step 4: Simplify right side
    479,256x = 176,777,141,264.64
  5. Step 5: Solve for x
    x = 176,777,141,264.64/479,256
  6. Step 6: Final answer
    x = 368,857.44

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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.