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Finding the Fourth Proportional to 286,489, 426,707.28 and 271,500.76

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Solution

The fourth proportional to 286,489, 426,707.28 and 271,500.76 is: 404,383.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,489 : 426,707.28 = 271,500.76 : x
  2. Step 2: Convert to fraction form
    286,489/426,707.28 = 271,500.76/x
  3. Step 3: Cross multiply
    286,489x = 426,707.28 × 271,500.76
  4. Step 4: Simplify right side
    286,489x = 115,851,350,817.53
  5. Step 5: Solve for x
    x = 115,851,350,817.53/286,489
  6. Step 6: Final answer
    x = 404,383.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.