Home / 383,191,885.49-528,805,013.18-206,979,880.10

Finding the Fourth Proportional to 383,191,885.49, 528,805,013.18 and 206,979,880.10

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Solution

The fourth proportional to 383,191,885.49, 528,805,013.18 and 206,979,880.10 is: 285,632,348.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,191,885.49 : 528,805,013.18 = 206,979,880.10 : x
  2. Step 2: Convert to fraction form
    383,191,885.49/528,805,013.18 = 206,979,880.10/x
  3. Step 3: Cross multiply
    383,191,885.49x = 528,805,013.18 × 206,979,880.10
  4. Step 4: Simplify right side
    383,191,885.49x = 109,451,998,220,596,400
  5. Step 5: Solve for x
    x = 109,451,998,220,596,400/383,191,885.49
  6. Step 6: Final answer
    x = 285,632,348.61

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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.