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Finding the Fourth Proportional to 307,630.64, 424,514 and 173,486

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Solution

The fourth proportional to 307,630.64, 424,514 and 173,486 is: 239,401.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,630.64 : 424,514 = 173,486 : x
  2. Step 2: Convert to fraction form
    307,630.64/424,514 = 173,486/x
  3. Step 3: Cross multiply
    307,630.64x = 424,514 × 173,486
  4. Step 4: Simplify right side
    307,630.64x = 73,647,235,804
  5. Step 5: Solve for x
    x = 73,647,235,804/307,630.64
  6. Step 6: Final answer
    x = 239,401.50

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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.