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Finding the Fourth Proportional to 538,801.28, 808,517 and 299,117

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Solution

The fourth proportional to 538,801.28, 808,517 and 299,117 is: 448,850.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,801.28 : 808,517 = 299,117 : x
  2. Step 2: Convert to fraction form
    538,801.28/808,517 = 299,117/x
  3. Step 3: Cross multiply
    538,801.28x = 808,517 × 299,117
  4. Step 4: Simplify right side
    538,801.28x = 241,841,179,489
  5. Step 5: Solve for x
    x = 241,841,179,489/538,801.28
  6. Step 6: Final answer
    x = 448,850.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.