Home / 425,498,336.98-638,441,433.78-218,382,193.38

Finding the Fourth Proportional to 425,498,336.98, 638,441,433.78 and 218,382,193.38

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Solution

The fourth proportional to 425,498,336.98, 638,441,433.78 and 218,382,193.38 is: 327,672,821.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,498,336.98 : 638,441,433.78 = 218,382,193.38 : x
  2. Step 2: Convert to fraction form
    425,498,336.98/638,441,433.78 = 218,382,193.38/x
  3. Step 3: Cross multiply
    425,498,336.98x = 638,441,433.78 × 218,382,193.38
  4. Step 4: Simplify right side
    425,498,336.98x = 139,424,240,653,548,416
  5. Step 5: Solve for x
    x = 139,424,240,653,548,416/425,498,336.98
  6. Step 6: Final answer
    x = 327,672,821.57

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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.