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Finding the Fourth Proportional to 509,770.20, 764,460.90 and 154,666.20

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Solution

The fourth proportional to 509,770.20, 764,460.90 and 154,666.20 is: 231,940.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,770.20 : 764,460.90 = 154,666.20 : x
  2. Step 2: Convert to fraction form
    509,770.20/764,460.90 = 154,666.20/x
  3. Step 3: Cross multiply
    509,770.20x = 764,460.90 × 154,666.20
  4. Step 4: Simplify right side
    509,770.20x = 118,236,262,451.58
  5. Step 5: Solve for x
    x = 118,236,262,451.58/509,770.20
  6. Step 6: Final answer
    x = 231,940.32

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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.