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Finding the Fourth Proportional to 286,313.60, 395,155.86 and 206,006.96

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Solution

The fourth proportional to 286,313.60, 395,155.86 and 206,006.96 is: 284,320.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,313.60 : 395,155.86 = 206,006.96 : x
  2. Step 2: Convert to fraction form
    286,313.60/395,155.86 = 206,006.96/x
  3. Step 3: Cross multiply
    286,313.60x = 395,155.86 × 206,006.96
  4. Step 4: Simplify right side
    286,313.60x = 81,404,857,444.79
  5. Step 5: Solve for x
    x = 81,404,857,444.79/286,313.60
  6. Step 6: Final answer
    x = 284,320.61

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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.