Home / 280,786.32-387,494.04-153,459.12

Finding the Fourth Proportional to 280,786.32, 387,494.04 and 153,459.12

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Solution

The fourth proportional to 280,786.32, 387,494.04 and 153,459.12 is: 211,778.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,786.32 : 387,494.04 = 153,459.12 : x
  2. Step 2: Convert to fraction form
    280,786.32/387,494.04 = 153,459.12/x
  3. Step 3: Cross multiply
    280,786.32x = 387,494.04 × 153,459.12
  4. Step 4: Simplify right side
    280,786.32x = 59,464,494,383.64
  5. Step 5: Solve for x
    x = 59,464,494,383.64/280,786.32
  6. Step 6: Final answer
    x = 211,778.46

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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.