Home / 380,640.38-570,928.17-155,936.66

Finding the Fourth Proportional to 380,640.38, 570,928.17 and 155,936.66

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Solution

The fourth proportional to 380,640.38, 570,928.17 and 155,936.66 is: 233,891.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,640.38 : 570,928.17 = 155,936.66 : x
  2. Step 2: Convert to fraction form
    380,640.38/570,928.17 = 155,936.66/x
  3. Step 3: Cross multiply
    380,640.38x = 570,928.17 × 155,936.66
  4. Step 4: Simplify right side
    380,640.38x = 89,028,631,929.71
  5. Step 5: Solve for x
    x = 89,028,631,929.71/380,640.38
  6. Step 6: Final answer
    x = 233,891.72

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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.