Home / 209,108,761.80-313,663,142.70-199,702,912.20

Finding the Fourth Proportional to 209,108,761.80, 313,663,142.70 and 199,702,912.20

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Solution

The fourth proportional to 209,108,761.80, 313,663,142.70 and 199,702,912.20 is: 299,554,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,108,761.80 : 313,663,142.70 = 199,702,912.20 : x
  2. Step 2: Convert to fraction form
    209,108,761.80/313,663,142.70 = 199,702,912.20/x
  3. Step 3: Cross multiply
    209,108,761.80x = 313,663,142.70 × 199,702,912.20
  4. Step 4: Simplify right side
    209,108,761.80x = 62,639,443,046,994,168
  5. Step 5: Solve for x
    x = 62,639,443,046,994,168/209,108,761.80
  6. Step 6: Final answer
    x = 299,554,368.30

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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.