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Finding the Fourth Proportional to 239,230.90, 330,138.95 and 130,334.70

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Solution

The fourth proportional to 239,230.90, 330,138.95 and 130,334.70 is: 179,862.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,230.90 : 330,138.95 = 130,334.70 : x
  2. Step 2: Convert to fraction form
    239,230.90/330,138.95 = 130,334.70/x
  3. Step 3: Cross multiply
    239,230.90x = 330,138.95 × 130,334.70
  4. Step 4: Simplify right side
    239,230.90x = 43,028,561,006.57
  5. Step 5: Solve for x
    x = 43,028,561,006.57/239,230.90
  6. Step 6: Final answer
    x = 179,862.05

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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.