Home / 286,983.30-396,583.16-215,238.77

Finding the Fourth Proportional to 286,983.30, 396,583.16 and 215,238.77

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Solution

The fourth proportional to 286,983.30, 396,583.16 and 215,238.77 is: 297,439.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,983.30 : 396,583.16 = 215,238.77 : x
  2. Step 2: Convert to fraction form
    286,983.30/396,583.16 = 215,238.77/x
  3. Step 3: Cross multiply
    286,983.30x = 396,583.16 × 215,238.77
  4. Step 4: Simplify right side
    286,983.30x = 85,360,069,989.19
  5. Step 5: Solve for x
    x = 85,360,069,989.19/286,983.30
  6. Step 6: Final answer
    x = 297,439.15

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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.