Home / 385,441,706.10-531,910,229.32-209,229,821.13

Finding the Fourth Proportional to 385,441,706.10, 531,910,229.32 and 209,229,821.13

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Solution

The fourth proportional to 385,441,706.10, 531,910,229.32 and 209,229,821.13 is: 288,737,519.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,441,706.10 : 531,910,229.32 = 209,229,821.13 : x
  2. Step 2: Convert to fraction form
    385,441,706.10/531,910,229.32 = 209,229,821.13/x
  3. Step 3: Cross multiply
    385,441,706.10x = 531,910,229.32 × 209,229,821.13
  4. Step 4: Simplify right side
    385,441,706.10x = 111,291,482,137,840,880
  5. Step 5: Solve for x
    x = 111,291,482,137,840,880/385,441,706.10
  6. Step 6: Final answer
    x = 288,737,519.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.