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Finding the Fourth Proportional to 286,783.60, 395,763.96 and 159,455.92

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Solution

The fourth proportional to 286,783.60, 395,763.96 and 159,455.92 is: 220,050.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,783.60 : 395,763.96 = 159,455.92 : x
  2. Step 2: Convert to fraction form
    286,783.60/395,763.96 = 159,455.92/x
  3. Step 3: Cross multiply
    286,783.60x = 395,763.96 × 159,455.92
  4. Step 4: Simplify right side
    286,783.60x = 63,106,906,344.64
  5. Step 5: Solve for x
    x = 63,106,906,344.64/286,783.60
  6. Step 6: Final answer
    x = 220,050.61

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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.