Home / 388,464.28-536,131.82-218,731.48

Finding the Fourth Proportional to 388,464.28, 536,131.82 and 218,731.48

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Solution

The fourth proportional to 388,464.28, 536,131.82 and 218,731.48 is: 301,878.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,464.28 : 536,131.82 = 218,731.48 : x
  2. Step 2: Convert to fraction form
    388,464.28/536,131.82 = 218,731.48/x
  3. Step 3: Cross multiply
    388,464.28x = 536,131.82 × 218,731.48
  4. Step 4: Simplify right side
    388,464.28x = 117,268,906,463.69
  5. Step 5: Solve for x
    x = 117,268,906,463.69/388,464.28
  6. Step 6: Final answer
    x = 301,878.22

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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.