Home / 318,947,101.50-440,147,296.68-172,269,385.50

Finding the Fourth Proportional to 318,947,101.50, 440,147,296.68 and 172,269,385.50

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Solution

The fourth proportional to 318,947,101.50, 440,147,296.68 and 172,269,385.50 is: 237,731,912.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,947,101.50 : 440,147,296.68 = 172,269,385.50 : x
  2. Step 2: Convert to fraction form
    318,947,101.50/440,147,296.68 = 172,269,385.50/x
  3. Step 3: Cross multiply
    318,947,101.50x = 440,147,296.68 × 172,269,385.50
  4. Step 4: Simplify right side
    318,947,101.50x = 75,823,904,328,549,792
  5. Step 5: Solve for x
    x = 75,823,904,328,549,792/318,947,101.50
  6. Step 6: Final answer
    x = 237,731,912.19

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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.