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Finding the Fourth Proportional to 286,385.60, 395,212.56 and 159,057.92

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Solution

The fourth proportional to 286,385.60, 395,212.56 and 159,057.92 is: 219,500.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,385.60 : 395,212.56 = 159,057.92 : x
  2. Step 2: Convert to fraction form
    286,385.60/395,212.56 = 159,057.92/x
  3. Step 3: Cross multiply
    286,385.60x = 395,212.56 × 159,057.92
  4. Step 4: Simplify right side
    286,385.60x = 62,861,687,751.48
  5. Step 5: Solve for x
    x = 62,861,687,751.48/286,385.60
  6. Step 6: Final answer
    x = 219,500.17

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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.