Home / 280,237.20-386,326.71-172,735.62

Finding the Fourth Proportional to 280,237.20, 386,326.71 and 172,735.62

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Solution

The fourth proportional to 280,237.20, 386,326.71 and 172,735.62 is: 238,128.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,237.20 : 386,326.71 = 172,735.62 : x
  2. Step 2: Convert to fraction form
    280,237.20/386,326.71 = 172,735.62/x
  3. Step 3: Cross multiply
    280,237.20x = 386,326.71 × 172,735.62
  4. Step 4: Simplify right side
    280,237.20x = 66,732,383,774.41
  5. Step 5: Solve for x
    x = 66,732,383,774.41/280,237.20
  6. Step 6: Final answer
    x = 238,128.21

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1.5x scale

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.