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Finding the Fourth Proportional to 239,392.44, 330,378.48 and 137,434.50

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Solution

The fourth proportional to 239,392.44, 330,378.48 and 137,434.50 is: 189,669.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,392.44 : 330,378.48 = 137,434.50 : x
  2. Step 2: Convert to fraction form
    239,392.44/330,378.48 = 137,434.50/x
  3. Step 3: Cross multiply
    239,392.44x = 330,378.48 × 137,434.50
  4. Step 4: Simplify right side
    239,392.44x = 45,405,401,209.56
  5. Step 5: Solve for x
    x = 45,405,401,209.56/239,392.44
  6. Step 6: Final answer
    x = 189,669.32

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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.