Home / 280,335.78-386,857.26-153,013.50

Finding the Fourth Proportional to 280,335.78, 386,857.26 and 153,013.50

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Solution

The fourth proportional to 280,335.78, 386,857.26 and 153,013.50 is: 211,155.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,335.78 : 386,857.26 = 153,013.50 : x
  2. Step 2: Convert to fraction form
    280,335.78/386,857.26 = 153,013.50/x
  3. Step 3: Cross multiply
    280,335.78x = 386,857.26 × 153,013.50
  4. Step 4: Simplify right side
    280,335.78x = 59,194,383,353.01
  5. Step 5: Solve for x
    x = 59,194,383,353.01/280,335.78
  6. Step 6: Final answer
    x = 211,155.29

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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.