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Finding the Fourth Proportional to 509,640.16, 764,464.85 and 154,654.18

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Solution

The fourth proportional to 509,640.16, 764,464.85 and 154,654.18 is: 231,982.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,640.16 : 764,464.85 = 154,654.18 : x
  2. Step 2: Convert to fraction form
    509,640.16/764,464.85 = 154,654.18/x
  3. Step 3: Cross multiply
    509,640.16x = 764,464.85 × 154,654.18
  4. Step 4: Simplify right side
    509,640.16x = 118,227,684,515.57
  5. Step 5: Solve for x
    x = 118,227,684,515.57/509,640.16
  6. Step 6: Final answer
    x = 231,982.67

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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.