Home / 385,856,518.50-532,486,838.43-209,647,456.56

Finding the Fourth Proportional to 385,856,518.50, 532,486,838.43 and 209,647,456.56

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Solution

The fourth proportional to 385,856,518.50, 532,486,838.43 and 209,647,456.56 is: 289,316,121.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,856,518.50 : 532,486,838.43 = 209,647,456.56 : x
  2. Step 2: Convert to fraction form
    385,856,518.50/532,486,838.43 = 209,647,456.56/x
  3. Step 3: Cross multiply
    385,856,518.50x = 532,486,838.43 × 209,647,456.56
  4. Step 4: Simplify right side
    385,856,518.50x = 111,634,511,328,525,168
  5. Step 5: Solve for x
    x = 111,634,511,328,525,168/385,856,518.50
  6. Step 6: Final answer
    x = 289,316,121.35

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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.