Home / 318,947,100.49-440,147,295.30-172,269,384.49

Finding the Fourth Proportional to 318,947,100.49, 440,147,295.30 and 172,269,384.49

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Solution

The fourth proportional to 318,947,100.49, 440,147,295.30 and 172,269,384.49 is: 237,731,910.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,947,100.49 : 440,147,295.30 = 172,269,384.49 : x
  2. Step 2: Convert to fraction form
    318,947,100.49/440,147,295.30 = 172,269,384.49/x
  3. Step 3: Cross multiply
    318,947,100.49x = 440,147,295.30 × 172,269,384.49
  4. Step 4: Simplify right side
    318,947,100.49x = 75,823,903,646,269,280
  5. Step 5: Solve for x
    x = 75,823,903,646,269,280/318,947,100.49
  6. Step 6: Final answer
    x = 237,731,910.81

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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.