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Finding the Fourth Proportional to 239,748.80, 359,623.20 and 81,963.20

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Solution

The fourth proportional to 239,748.80, 359,623.20 and 81,963.20 is: 122,944.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,748.80 : 359,623.20 = 81,963.20 : x
  2. Step 2: Convert to fraction form
    239,748.80/359,623.20 = 81,963.20/x
  3. Step 3: Cross multiply
    239,748.80x = 359,623.20 × 81,963.20
  4. Step 4: Simplify right side
    239,748.80x = 29,475,868,266.24
  5. Step 5: Solve for x
    x = 29,475,868,266.24/239,748.80
  6. Step 6: Final answer
    x = 122,944.80

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1.5x scale

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.