Home / 393,981.76-543,715.10-240,971.95

Finding the Fourth Proportional to 393,981.76, 543,715.10 and 240,971.95

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Solution

The fourth proportional to 393,981.76, 543,715.10 and 240,971.95 is: 332,553.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,981.76 : 543,715.10 = 240,971.95 : x
  2. Step 2: Convert to fraction form
    393,981.76/543,715.10 = 240,971.95/x
  3. Step 3: Cross multiply
    393,981.76x = 543,715.10 × 240,971.95
  4. Step 4: Simplify right side
    393,981.76x = 131,020,087,891.45
  5. Step 5: Solve for x
    x = 131,020,087,891.45/393,981.76
  6. Step 6: Final answer
    x = 332,553.69

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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.