Home / 213,993,814.40-320,990,721.60-137,466,310.40

Finding the Fourth Proportional to 213,993,814.40, 320,990,721.60 and 137,466,310.40

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Solution

The fourth proportional to 213,993,814.40, 320,990,721.60 and 137,466,310.40 is: 206,199,465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,993,814.40 : 320,990,721.60 = 137,466,310.40 : x
  2. Step 2: Convert to fraction form
    213,993,814.40/320,990,721.60 = 137,466,310.40/x
  3. Step 3: Cross multiply
    213,993,814.40x = 320,990,721.60 × 137,466,310.40
  4. Step 4: Simplify right side
    213,993,814.40x = 44,125,410,170,985,592
  5. Step 5: Solve for x
    x = 44,125,410,170,985,592/213,993,814.40
  6. Step 6: Final answer
    x = 206,199,465.60

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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.