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Finding the Fourth Proportional to 509,516.20, 764,079.90 and 154,412.20

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Solution

The fourth proportional to 509,516.20, 764,079.90 and 154,412.20 is: 231,559.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,516.20 : 764,079.90 = 154,412.20 : x
  2. Step 2: Convert to fraction form
    509,516.20/764,079.90 = 154,412.20/x
  3. Step 3: Cross multiply
    509,516.20x = 764,079.90 × 154,412.20
  4. Step 4: Simplify right side
    509,516.20x = 117,983,258,334.78
  5. Step 5: Solve for x
    x = 117,983,258,334.78/509,516.20
  6. Step 6: Final answer
    x = 231,559.39

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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.