Home / 213,655,121.10-320,482,681.65-199,322,397.90

Finding the Fourth Proportional to 213,655,121.10, 320,482,681.65 and 199,322,397.90

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Solution

The fourth proportional to 213,655,121.10, 320,482,681.65 and 199,322,397.90 is: 298,983,596.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,655,121.10 : 320,482,681.65 = 199,322,397.90 : x
  2. Step 2: Convert to fraction form
    213,655,121.10/320,482,681.65 = 199,322,397.90/x
  3. Step 3: Cross multiply
    213,655,121.10x = 320,482,681.65 × 199,322,397.90
  4. Step 4: Simplify right side
    213,655,121.10x = 63,879,376,591,900,328
  5. Step 5: Solve for x
    x = 63,879,376,591,900,328/213,655,121.10
  6. Step 6: Final answer
    x = 298,983,596.85

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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.