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Finding the Fourth Proportional to 509,902.60, 764,829.60 and 172,910.20

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Solution

The fourth proportional to 509,902.60, 764,829.60 and 172,910.20 is: 259,357.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,902.60 : 764,829.60 = 172,910.20 : x
  2. Step 2: Convert to fraction form
    509,902.60/764,829.60 = 172,910.20/x
  3. Step 3: Cross multiply
    509,902.60x = 764,829.60 × 172,910.20
  4. Step 4: Simplify right side
    509,902.60x = 132,246,839,101.92
  5. Step 5: Solve for x
    x = 132,246,839,101.92/509,902.60
  6. Step 6: Final answer
    x = 259,357.06

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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.