Home / 213,993,815.40-320,990,723.10-137,466,311.40

Finding the Fourth Proportional to 213,993,815.40, 320,990,723.10 and 137,466,311.40

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Solution

The fourth proportional to 213,993,815.40, 320,990,723.10 and 137,466,311.40 is: 206,199,467.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,993,815.40 : 320,990,723.10 = 137,466,311.40 : x
  2. Step 2: Convert to fraction form
    213,993,815.40/320,990,723.10 = 137,466,311.40/x
  3. Step 3: Cross multiply
    213,993,815.40x = 320,990,723.10 × 137,466,311.40
  4. Step 4: Simplify right side
    213,993,815.40x = 44,125,410,698,175,776
  5. Step 5: Solve for x
    x = 44,125,410,698,175,776/213,993,815.40
  6. Step 6: Final answer
    x = 206,199,467.10

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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.