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Finding the Fourth Proportional to 318,936.71, 478,491.44 and 119,277.38

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Solution

The fourth proportional to 318,936.71, 478,491.44 and 119,277.38 is: 178,948.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,936.71 : 478,491.44 = 119,277.38 : x
  2. Step 2: Convert to fraction form
    318,936.71/478,491.44 = 119,277.38/x
  3. Step 3: Cross multiply
    318,936.71x = 478,491.44 × 119,277.38
  4. Step 4: Simplify right side
    318,936.71x = 57,073,205,915.47
  5. Step 5: Solve for x
    x = 57,073,205,915.47/318,936.71
  6. Step 6: Final answer
    x = 178,948.37

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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.