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Finding the Fourth Proportional to 307,648.49, 424,578.87 and 169,854.44

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Solution

The fourth proportional to 307,648.49, 424,578.87 and 169,854.44 is: 234,412.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,648.49 : 424,578.87 = 169,854.44 : x
  2. Step 2: Convert to fraction form
    307,648.49/424,578.87 = 169,854.44/x
  3. Step 3: Cross multiply
    307,648.49x = 424,578.87 × 169,854.44
  4. Step 4: Simplify right side
    307,648.49x = 72,116,604,076.79
  5. Step 5: Solve for x
    x = 72,116,604,076.79/307,648.49
  6. Step 6: Final answer
    x = 234,412.35

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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.