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Finding the Fourth Proportional to 509,891.60, 764,680.60 and 168,271.76

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Solution

The fourth proportional to 509,891.60, 764,680.60 and 168,271.76 is: 252,355.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,891.60 : 764,680.60 = 168,271.76 : x
  2. Step 2: Convert to fraction form
    509,891.60/764,680.60 = 168,271.76/x
  3. Step 3: Cross multiply
    509,891.60x = 764,680.60 × 168,271.76
  4. Step 4: Simplify right side
    509,891.60x = 128,674,150,399.86
  5. Step 5: Solve for x
    x = 128,674,150,399.86/509,891.60
  6. Step 6: Final answer
    x = 252,355.89

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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.