Home / 400,315.43-600,378.82-147,458.61

Finding the Fourth Proportional to 400,315.43, 600,378.82 and 147,458.61

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Solution

The fourth proportional to 400,315.43, 600,378.82 and 147,458.61 is: 221,153.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,315.43 : 600,378.82 = 147,458.61 : x
  2. Step 2: Convert to fraction form
    400,315.43/600,378.82 = 147,458.61/x
  3. Step 3: Cross multiply
    400,315.43x = 600,378.82 × 147,458.61
  4. Step 4: Simplify right side
    400,315.43x = 88,531,025,901.99
  5. Step 5: Solve for x
    x = 88,531,025,901.99/400,315.43
  6. Step 6: Final answer
    x = 221,153.17

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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.