Home / 387,955.58-581,788.17-135,171.18

Finding the Fourth Proportional to 387,955.58, 581,788.17 and 135,171.18

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Solution

The fourth proportional to 387,955.58, 581,788.17 and 135,171.18 is: 202,706.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,955.58 : 581,788.17 = 135,171.18 : x
  2. Step 2: Convert to fraction form
    387,955.58/581,788.17 = 135,171.18/x
  3. Step 3: Cross multiply
    387,955.58x = 581,788.17 × 135,171.18
  4. Step 4: Simplify right side
    387,955.58x = 78,640,993,448.94
  5. Step 5: Solve for x
    x = 78,640,993,448.94/387,955.58
  6. Step 6: Final answer
    x = 202,706.18

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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.