Home / 543,213,217.80-815,032,403.10-198,201,720.60

Finding the Fourth Proportional to 543,213,217.80, 815,032,403.10 and 198,201,720.60

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Solution

The fourth proportional to 543,213,217.80, 815,032,403.10 and 198,201,720.60 is: 297,380,143.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,213,217.80 : 815,032,403.10 = 198,201,720.60 : x
  2. Step 2: Convert to fraction form
    543,213,217.80/815,032,403.10 = 198,201,720.60/x
  3. Step 3: Cross multiply
    543,213,217.80x = 815,032,403.10 × 198,201,720.60
  4. Step 4: Simplify right side
    543,213,217.80x = 161,540,824,639,172,768
  5. Step 5: Solve for x
    x = 161,540,824,639,172,768/543,213,217.80
  6. Step 6: Final answer
    x = 297,380,143.46

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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.