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Finding the Fourth Proportional to 509,546.20, 764,124.90 and 154,442.20

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Solution

The fourth proportional to 509,546.20, 764,124.90 and 154,442.20 is: 231,604.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,546.20 : 764,124.90 = 154,442.20 : x
  2. Step 2: Convert to fraction form
    509,546.20/764,124.90 = 154,442.20/x
  3. Step 3: Cross multiply
    509,546.20x = 764,124.90 × 154,442.20
  4. Step 4: Simplify right side
    509,546.20x = 118,013,130,630.78
  5. Step 5: Solve for x
    x = 118,013,130,630.78/509,546.20
  6. Step 6: Final answer
    x = 231,604.38

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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.