Home / 206,426,579.40-309,639,869.10-198,490,393.80

Finding the Fourth Proportional to 206,426,579.40, 309,639,869.10 and 198,490,393.80

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Solution

The fourth proportional to 206,426,579.40, 309,639,869.10 and 198,490,393.80 is: 297,735,590.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,426,579.40 : 309,639,869.10 = 198,490,393.80 : x
  2. Step 2: Convert to fraction form
    206,426,579.40/309,639,869.10 = 198,490,393.80/x
  3. Step 3: Cross multiply
    206,426,579.40x = 309,639,869.10 × 198,490,393.80
  4. Step 4: Simplify right side
    206,426,579.40x = 61,460,539,553,839,464
  5. Step 5: Solve for x
    x = 61,460,539,553,839,464/206,426,579.40
  6. Step 6: Final answer
    x = 297,735,590.70

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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.