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Finding the Fourth Proportional to 307,710, 424,640.34 and 173,574

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Solution

The fourth proportional to 307,710, 424,640.34 and 173,574 is: 239,532.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,710 : 424,640.34 = 173,574 : x
  2. Step 2: Convert to fraction form
    307,710/424,640.34 = 173,574/x
  3. Step 3: Cross multiply
    307,710x = 424,640.34 × 173,574
  4. Step 4: Simplify right side
    307,710x = 73,706,522,375.16
  5. Step 5: Solve for x
    x = 73,706,522,375.16/307,710
  6. Step 6: Final answer
    x = 239,532.42

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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.