Home / 280,676.24-387,359.52-153,370.72

Finding the Fourth Proportional to 280,676.24, 387,359.52 and 153,370.72

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Solution

The fourth proportional to 280,676.24, 387,359.52 and 153,370.72 is: 211,665.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,676.24 : 387,359.52 = 153,370.72 : x
  2. Step 2: Convert to fraction form
    280,676.24/387,359.52 = 153,370.72/x
  3. Step 3: Cross multiply
    280,676.24x = 387,359.52 × 153,370.72
  4. Step 4: Simplify right side
    280,676.24x = 59,409,608,481.25
  5. Step 5: Solve for x
    x = 59,409,608,481.25/280,676.24
  6. Step 6: Final answer
    x = 211,665.97

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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.