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Finding the Fourth Proportional to 307,649.49, 424,580.25 and 169,855.44

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Solution

The fourth proportional to 307,649.49, 424,580.25 and 169,855.44 is: 234,413.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,649.49 : 424,580.25 = 169,855.44 : x
  2. Step 2: Convert to fraction form
    307,649.49/424,580.25 = 169,855.44/x
  3. Step 3: Cross multiply
    307,649.49x = 424,580.25 × 169,855.44
  4. Step 4: Simplify right side
    307,649.49x = 72,117,265,179.06
  5. Step 5: Solve for x
    x = 72,117,265,179.06/307,649.49
  6. Step 6: Final answer
    x = 234,413.73

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1.5x scale

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.