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Finding the Fourth Proportional to 239,396.53, 330,369.45 and 131,970.40

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Solution

The fourth proportional to 239,396.53, 330,369.45 and 131,970.40 is: 182,120.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,396.53 : 330,369.45 = 131,970.40 : x
  2. Step 2: Convert to fraction form
    239,396.53/330,369.45 = 131,970.40/x
  3. Step 3: Cross multiply
    239,396.53x = 330,369.45 × 131,970.40
  4. Step 4: Simplify right side
    239,396.53x = 43,598,989,744.13
  5. Step 5: Solve for x
    x = 43,598,989,744.13/239,396.53
  6. Step 6: Final answer
    x = 182,120.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.