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Finding the Fourth Proportional to 325,153.53, 448,415.39 and 279,198.81

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Solution

The fourth proportional to 325,153.53, 448,415.39 and 279,198.81 is: 385,039.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,153.53 : 448,415.39 = 279,198.81 : x
  2. Step 2: Convert to fraction form
    325,153.53/448,415.39 = 279,198.81/x
  3. Step 3: Cross multiply
    325,153.53x = 448,415.39 × 279,198.81
  4. Step 4: Simplify right side
    325,153.53x = 125,197,041,877.69
  5. Step 5: Solve for x
    x = 125,197,041,877.69/325,153.53
  6. Step 6: Final answer
    x = 385,039.77

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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.