Home / 319,198,389.67-440,493,578.78-172,520,673.67

Finding the Fourth Proportional to 319,198,389.67, 440,493,578.78 and 172,520,673.67

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Solution

The fourth proportional to 319,198,389.67, 440,493,578.78 and 172,520,673.67 is: 238,078,422.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,198,389.67 : 440,493,578.78 = 172,520,673.67 : x
  2. Step 2: Convert to fraction form
    319,198,389.67/440,493,578.78 = 172,520,673.67/x
  3. Step 3: Cross multiply
    319,198,389.67x = 440,493,578.78 × 172,520,673.67
  4. Step 4: Simplify right side
    319,198,389.67x = 75,994,248,958,866,112
  5. Step 5: Solve for x
    x = 75,994,248,958,866,112/319,198,389.67
  6. Step 6: Final answer
    x = 238,078,422.13

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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.