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Finding the Fourth Proportional to 252,651.18, 348,656.49 and 139,471.50

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Solution

The fourth proportional to 252,651.18, 348,656.49 and 139,471.50 is: 192,469.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,651.18 : 348,656.49 = 139,471.50 : x
  2. Step 2: Convert to fraction form
    252,651.18/348,656.49 = 139,471.50/x
  3. Step 3: Cross multiply
    252,651.18x = 348,656.49 × 139,471.50
  4. Step 4: Simplify right side
    252,651.18x = 48,627,643,645.04
  5. Step 5: Solve for x
    x = 48,627,643,645.04/252,651.18
  6. Step 6: Final answer
    x = 192,469.49

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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.