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Finding the Fourth Proportional to 307,869.33, 424,866.89 and 171,898.68

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Solution

The fourth proportional to 307,869.33, 424,866.89 and 171,898.68 is: 237,224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,869.33 : 424,866.89 = 171,898.68 : x
  2. Step 2: Convert to fraction form
    307,869.33/424,866.89 = 171,898.68/x
  3. Step 3: Cross multiply
    307,869.33x = 424,866.89 × 171,898.68
  4. Step 4: Simplify right side
    307,869.33x = 73,034,057,996.45
  5. Step 5: Solve for x
    x = 73,034,057,996.45/307,869.33
  6. Step 6: Final answer
    x = 237,224.21

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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.