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Finding the Fourth Proportional to 239,396.71, 330,369.76 and 131,970.59

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Solution

The fourth proportional to 239,396.71, 330,369.76 and 131,970.59 is: 182,120.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,396.71 : 330,369.76 = 131,970.59 : x
  2. Step 2: Convert to fraction form
    239,396.71/330,369.76 = 131,970.59/x
  3. Step 3: Cross multiply
    239,396.71x = 330,369.76 × 131,970.59
  4. Step 4: Simplify right side
    239,396.71x = 43,599,090,271.95
  5. Step 5: Solve for x
    x = 43,599,090,271.95/239,396.71
  6. Step 6: Final answer
    x = 182,120.68

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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.