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Finding the Fourth Proportional to 307,907.87, 424,875.39 and 171,949.37

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Solution

The fourth proportional to 307,907.87, 424,875.39 and 171,949.37 is: 237,269.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,907.87 : 424,875.39 = 171,949.37 : x
  2. Step 2: Convert to fraction form
    307,907.87/424,875.39 = 171,949.37/x
  3. Step 3: Cross multiply
    307,907.87x = 424,875.39 × 171,949.37
  4. Step 4: Simplify right side
    307,907.87x = 73,057,055,639.00
  5. Step 5: Solve for x
    x = 73,057,055,639.00/307,907.87
  6. Step 6: Final answer
    x = 237,269.21

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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.