Home / 280,786.77-387,479.97-153,463.26

Finding the Fourth Proportional to 280,786.77, 387,479.97 and 153,463.26

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Solution

The fourth proportional to 280,786.77, 387,479.97 and 153,463.26 is: 211,776.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,786.77 : 387,479.97 = 153,463.26 : x
  2. Step 2: Convert to fraction form
    280,786.77/387,479.97 = 153,463.26/x
  3. Step 3: Cross multiply
    280,786.77x = 387,479.97 × 153,463.26
  4. Step 4: Simplify right side
    280,786.77x = 59,463,939,380.90
  5. Step 5: Solve for x
    x = 59,463,939,380.90/280,786.77
  6. Step 6: Final answer
    x = 211,776.14

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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.