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Finding the Fourth Proportional to 307,149.51, 424,033.61 and 212,167.29

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Solution

The fourth proportional to 307,149.51, 424,033.61 and 212,167.29 is: 292,906.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,149.51 : 424,033.61 = 212,167.29 : x
  2. Step 2: Convert to fraction form
    307,149.51/424,033.61 = 212,167.29/x
  3. Step 3: Cross multiply
    307,149.51x = 424,033.61 × 212,167.29
  4. Step 4: Simplify right side
    307,149.51x = 89,966,060,841.78
  5. Step 5: Solve for x
    x = 89,966,060,841.78/307,149.51
  6. Step 6: Final answer
    x = 292,906.41

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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.