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Finding the Fourth Proportional to 299,172.17, 448,754.81 and 85,945.31

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Solution

The fourth proportional to 299,172.17, 448,754.81 and 85,945.31 is: 128,916.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,172.17 : 448,754.81 = 85,945.31 : x
  2. Step 2: Convert to fraction form
    299,172.17/448,754.81 = 85,945.31/x
  3. Step 3: Cross multiply
    299,172.17x = 448,754.81 × 85,945.31
  4. Step 4: Simplify right side
    299,172.17x = 38,568,371,951.60
  5. Step 5: Solve for x
    x = 38,568,371,951.60/299,172.17
  6. Step 6: Final answer
    x = 128,916.98

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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.