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Finding the Fourth Proportional to 382,912.37, 574,011.76 and 130,019.90

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Solution

The fourth proportional to 382,912.37, 574,011.76 and 130,019.90 is: 194,908.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,912.37 : 574,011.76 = 130,019.90 : x
  2. Step 2: Convert to fraction form
    382,912.37/574,011.76 = 130,019.90/x
  3. Step 3: Cross multiply
    382,912.37x = 574,011.76 × 130,019.90
  4. Step 4: Simplify right side
    382,912.37x = 74,632,948,438.92
  5. Step 5: Solve for x
    x = 74,632,948,438.92/382,912.37
  6. Step 6: Final answer
    x = 194,908.69

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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.