Home / 280,563.22-387,179.30-153,238.82

Finding the Fourth Proportional to 280,563.22, 387,179.30 and 153,238.82

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Solution

The fourth proportional to 280,563.22, 387,179.30 and 153,238.82 is: 211,470.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,563.22 : 387,179.30 = 153,238.82 : x
  2. Step 2: Convert to fraction form
    280,563.22/387,179.30 = 153,238.82/x
  3. Step 3: Cross multiply
    280,563.22x = 387,179.30 × 153,238.82
  4. Step 4: Simplify right side
    280,563.22x = 59,330,899,060.43
  5. Step 5: Solve for x
    x = 59,330,899,060.43/280,563.22
  6. Step 6: Final answer
    x = 211,470.69

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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.