Home / 310,731.53-428,842.42-189,943.52

Finding the Fourth Proportional to 310,731.53, 428,842.42 and 189,943.52

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Solution

The fourth proportional to 310,731.53, 428,842.42 and 189,943.52 is: 262,142.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,731.53 : 428,842.42 = 189,943.52 : x
  2. Step 2: Convert to fraction form
    310,731.53/428,842.42 = 189,943.52/x
  3. Step 3: Cross multiply
    310,731.53x = 428,842.42 × 189,943.52
  4. Step 4: Simplify right side
    310,731.53x = 81,455,839,377.37
  5. Step 5: Solve for x
    x = 81,455,839,377.37/310,731.53
  6. Step 6: Final answer
    x = 262,142.17

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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.