Home / 318,947,108.49-440,147,306.34-172,269,392.49

Finding the Fourth Proportional to 318,947,108.49, 440,147,306.34 and 172,269,392.49

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Solution

The fourth proportional to 318,947,108.49, 440,147,306.34 and 172,269,392.49 is: 237,731,921.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,947,108.49 : 440,147,306.34 = 172,269,392.49 : x
  2. Step 2: Convert to fraction form
    318,947,108.49/440,147,306.34 = 172,269,392.49/x
  3. Step 3: Cross multiply
    318,947,108.49x = 440,147,306.34 × 172,269,392.49
  4. Step 4: Simplify right side
    318,947,108.49x = 75,823,909,069,301,728
  5. Step 5: Solve for x
    x = 75,823,909,069,301,728/318,947,108.49
  6. Step 6: Final answer
    x = 237,731,921.85

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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.