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Finding the Fourth Proportional to 325,411.53, 448,990.61 and 189,363.12

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Solution

The fourth proportional to 325,411.53, 448,990.61 and 189,363.12 is: 261,276.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,411.53 : 448,990.61 = 189,363.12 : x
  2. Step 2: Convert to fraction form
    325,411.53/448,990.61 = 189,363.12/x
  3. Step 3: Cross multiply
    325,411.53x = 448,990.61 × 189,363.12
  4. Step 4: Simplify right side
    325,411.53x = 85,022,261,813.49
  5. Step 5: Solve for x
    x = 85,022,261,813.49/325,411.53
  6. Step 6: Final answer
    x = 261,276.12

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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.