Home / 318,890,803.78-440,069,305.55-172,213,087.78

Finding the Fourth Proportional to 318,890,803.78, 440,069,305.55 and 172,213,087.78

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Solution

The fourth proportional to 318,890,803.78, 440,069,305.55 and 172,213,087.78 is: 237,654,059.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,890,803.78 : 440,069,305.55 = 172,213,087.78 : x
  2. Step 2: Convert to fraction form
    318,890,803.78/440,069,305.55 = 172,213,087.78/x
  3. Step 3: Cross multiply
    318,890,803.78x = 440,069,305.55 × 172,213,087.78
  4. Step 4: Simplify right side
    318,890,803.78x = 75,785,693,945,965,792
  5. Step 5: Solve for x
    x = 75,785,693,945,965,792/318,890,803.78
  6. Step 6: Final answer
    x = 237,654,059.16

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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.