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Finding the Fourth Proportional to 336,081, 503,943.30 and 99,390.90

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Solution

The fourth proportional to 336,081, 503,943.30 and 99,390.90 is: 149,033.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,081 : 503,943.30 = 99,390.90 : x
  2. Step 2: Convert to fraction form
    336,081/503,943.30 = 99,390.90/x
  3. Step 3: Cross multiply
    336,081x = 503,943.30 × 99,390.90
  4. Step 4: Simplify right side
    336,081x = 50,087,378,135.97
  5. Step 5: Solve for x
    x = 50,087,378,135.97/336,081
  6. Step 6: Final answer
    x = 149,033.65

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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.