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Finding the Fourth Proportional to 571,201.20, 856,801.80 and 361,249.20

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Solution

The fourth proportional to 571,201.20, 856,801.80 and 361,249.20 is: 541,873.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,201.20 : 856,801.80 = 361,249.20 : x
  2. Step 2: Convert to fraction form
    571,201.20/856,801.80 = 361,249.20/x
  3. Step 3: Cross multiply
    571,201.20x = 856,801.80 × 361,249.20
  4. Step 4: Simplify right side
    571,201.20x = 309,518,964,808.56
  5. Step 5: Solve for x
    x = 309,518,964,808.56/571,201.20
  6. Step 6: Final answer
    x = 541,873.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.