Home / 356,380.49-491,805.07-213,140.53

Finding the Fourth Proportional to 356,380.49, 491,805.07 and 213,140.53

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Solution

The fourth proportional to 356,380.49, 491,805.07 and 213,140.53 is: 294,133.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,380.49 : 491,805.07 = 213,140.53 : x
  2. Step 2: Convert to fraction form
    356,380.49/491,805.07 = 213,140.53/x
  3. Step 3: Cross multiply
    356,380.49x = 491,805.07 × 213,140.53
  4. Step 4: Simplify right side
    356,380.49x = 104,823,593,358.39
  5. Step 5: Solve for x
    x = 104,823,593,358.39/356,380.49
  6. Step 6: Final answer
    x = 294,133.93

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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.