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Finding the Fourth Proportional to 419,907,482.10, 629,861,223.15 and 247,295,445.30

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Solution

The fourth proportional to 419,907,482.10, 629,861,223.15 and 247,295,445.30 is: 370,943,167.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,907,482.10 : 629,861,223.15 = 247,295,445.30 : x
  2. Step 2: Convert to fraction form
    419,907,482.10/629,861,223.15 = 247,295,445.30/x
  3. Step 3: Cross multiply
    419,907,482.10x = 629,861,223.15 × 247,295,445.30
  4. Step 4: Simplify right side
    419,907,482.10x = 155,761,811,656,081,920
  5. Step 5: Solve for x
    x = 155,761,811,656,081,920/419,907,482.10
  6. Step 6: Final answer
    x = 370,943,167.95

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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.