Home / 356,426.32-491,844-209,299.60

Finding the Fourth Proportional to 356,426.32, 491,844 and 209,299.60

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Solution

The fourth proportional to 356,426.32, 491,844 and 209,299.60 is: 288,819.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,426.32 : 491,844 = 209,299.60 : x
  2. Step 2: Convert to fraction form
    356,426.32/491,844 = 209,299.60/x
  3. Step 3: Cross multiply
    356,426.32x = 491,844 × 209,299.60
  4. Step 4: Simplify right side
    356,426.32x = 102,942,752,462.40
  5. Step 5: Solve for x
    x = 102,942,752,462.40/356,426.32
  6. Step 6: Final answer
    x = 288,819.17

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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.