Home / 280,846.13-387,344.58-212,164.61

Finding the Fourth Proportional to 280,846.13, 387,344.58 and 212,164.61

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Solution

The fourth proportional to 280,846.13, 387,344.58 and 212,164.61 is: 292,618.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,846.13 : 387,344.58 = 212,164.61 : x
  2. Step 2: Convert to fraction form
    280,846.13/387,344.58 = 212,164.61/x
  3. Step 3: Cross multiply
    280,846.13x = 387,344.58 × 212,164.61
  4. Step 4: Simplify right side
    280,846.13x = 82,180,811,751.31
  5. Step 5: Solve for x
    x = 82,180,811,751.31/280,846.13
  6. Step 6: Final answer
    x = 292,618.64

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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.