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Finding the Fourth Proportional to 199,385,872.40, 279,543,329.20 and 199,385,872.40

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Solution

The fourth proportional to 199,385,872.40, 279,543,329.20 and 199,385,872.40 is: 279,543,329.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,385,872.40 : 279,543,329.20 = 199,385,872.40 : x
  2. Step 2: Convert to fraction form
    199,385,872.40/279,543,329.20 = 199,385,872.40/x
  3. Step 3: Cross multiply
    199,385,872.40x = 279,543,329.20 × 199,385,872.40
  4. Step 4: Simplify right side
    199,385,872.40x = 55,736,990,566,142,392
  5. Step 5: Solve for x
    x = 55,736,990,566,142,392/199,385,872.40
  6. Step 6: Final answer
    x = 279,543,329.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.