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Finding the Fourth Proportional to 361,643.40, 499,079.75 and 200,513.48

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Solution

The fourth proportional to 361,643.40, 499,079.75 and 200,513.48 is: 276,715.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,643.40 : 499,079.75 = 200,513.48 : x
  2. Step 2: Convert to fraction form
    361,643.40/499,079.75 = 200,513.48/x
  3. Step 3: Cross multiply
    361,643.40x = 499,079.75 × 200,513.48
  4. Step 4: Simplify right side
    361,643.40x = 100,072,213,972.06
  5. Step 5: Solve for x
    x = 100,072,213,972.06/361,643.40
  6. Step 6: Final answer
    x = 276,715.17

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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.