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Finding the Fourth Proportional to 501,225.28, 691,678.56 and 271,769.92

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Solution

The fourth proportional to 501,225.28, 691,678.56 and 271,769.92 is: 375,035.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,225.28 : 691,678.56 = 271,769.92 : x
  2. Step 2: Convert to fraction form
    501,225.28/691,678.56 = 271,769.92/x
  3. Step 3: Cross multiply
    501,225.28x = 691,678.56 × 271,769.92
  4. Step 4: Simplify right side
    501,225.28x = 187,977,426,916.92
  5. Step 5: Solve for x
    x = 187,977,426,916.92/501,225.28
  6. Step 6: Final answer
    x = 375,035.81

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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.