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Finding the Fourth Proportional to 339,439.71, 508,384.55 and 162,071.28

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Solution

The fourth proportional to 339,439.71, 508,384.55 and 162,071.28 is: 242,736.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,439.71 : 508,384.55 = 162,071.28 : x
  2. Step 2: Convert to fraction form
    339,439.71/508,384.55 = 162,071.28/x
  3. Step 3: Cross multiply
    339,439.71x = 508,384.55 × 162,071.28
  4. Step 4: Simplify right side
    339,439.71x = 82,394,535,155.90
  5. Step 5: Solve for x
    x = 82,394,535,155.90/339,439.71
  6. Step 6: Final answer
    x = 242,736.87

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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.