Home / 388,387.51-582,721.09-135,705.17

Finding the Fourth Proportional to 388,387.51, 582,721.09 and 135,705.17

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Solution

The fourth proportional to 388,387.51, 582,721.09 and 135,705.17 is: 203,606.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,387.51 : 582,721.09 = 135,705.17 : x
  2. Step 2: Convert to fraction form
    388,387.51/582,721.09 = 135,705.17/x
  3. Step 3: Cross multiply
    388,387.51x = 582,721.09 × 135,705.17
  4. Step 4: Simplify right side
    388,387.51x = 79,078,265,698.58
  5. Step 5: Solve for x
    x = 79,078,265,698.58/388,387.51
  6. Step 6: Final answer
    x = 203,606.61

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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.