Home / 205,621.68-308,434.64-72,477.12

Finding the Fourth Proportional to 205,621.68, 308,434.64 and 72,477.12

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Solution

The fourth proportional to 205,621.68, 308,434.64 and 72,477.12 is: 108,716.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,621.68 : 308,434.64 = 72,477.12 : x
  2. Step 2: Convert to fraction form
    205,621.68/308,434.64 = 72,477.12/x
  3. Step 3: Cross multiply
    205,621.68x = 308,434.64 × 72,477.12
  4. Step 4: Simplify right side
    205,621.68x = 22,354,454,415.44
  5. Step 5: Solve for x
    x = 22,354,454,415.44/205,621.68
  6. Step 6: Final answer
    x = 108,716.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.