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Finding the Fourth Proportional to 307,520.52, 424,378.40 and 173,384.52

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Solution

The fourth proportional to 307,520.52, 424,378.40 and 173,384.52 is: 239,270.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,520.52 : 424,378.40 = 173,384.52 : x
  2. Step 2: Convert to fraction form
    307,520.52/424,378.40 = 173,384.52/x
  3. Step 3: Cross multiply
    307,520.52x = 424,378.40 × 173,384.52
  4. Step 4: Simplify right side
    307,520.52x = 73,580,645,182.37
  5. Step 5: Solve for x
    x = 73,580,645,182.37/307,520.52
  6. Step 6: Final answer
    x = 239,270.68

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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.