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Finding the Fourth Proportional to 340,021.44, 509,993.28 and 90,722.88

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Solution

The fourth proportional to 340,021.44, 509,993.28 and 90,722.88 is: 136,073.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,021.44 : 509,993.28 = 90,722.88 : x
  2. Step 2: Convert to fraction form
    340,021.44/509,993.28 = 90,722.88/x
  3. Step 3: Cross multiply
    340,021.44x = 509,993.28 × 90,722.88
  4. Step 4: Simplify right side
    340,021.44x = 46,268,059,142.25
  5. Step 5: Solve for x
    x = 46,268,059,142.25/340,021.44
  6. Step 6: Final answer
    x = 136,073.95

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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.