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Finding the Fourth Proportional to 224,142.20, 336,213.30 and 81,987.20

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Solution

The fourth proportional to 224,142.20, 336,213.30 and 81,987.20 is: 122,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,142.20 : 336,213.30 = 81,987.20 : x
  2. Step 2: Convert to fraction form
    224,142.20/336,213.30 = 81,987.20/x
  3. Step 3: Cross multiply
    224,142.20x = 336,213.30 × 81,987.20
  4. Step 4: Simplify right side
    224,142.20x = 27,565,187,069.76
  5. Step 5: Solve for x
    x = 27,565,187,069.76/224,142.20
  6. Step 6: Final answer
    x = 122,980.80

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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.