Home / 318,889,793.88-440,067,921.08-172,212,077.88

Finding the Fourth Proportional to 318,889,793.88, 440,067,921.08 and 172,212,077.88

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Solution

The fourth proportional to 318,889,793.88, 440,067,921.08 and 172,212,077.88 is: 237,652,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,889,793.88 : 440,067,921.08 = 172,212,077.88 : x
  2. Step 2: Convert to fraction form
    318,889,793.88/440,067,921.08 = 172,212,077.88/x
  3. Step 3: Cross multiply
    318,889,793.88x = 440,067,921.08 × 172,212,077.88
  4. Step 4: Simplify right side
    318,889,793.88x = 75,785,011,097,518,656
  5. Step 5: Solve for x
    x = 75,785,011,097,518,656/318,889,793.88
  6. Step 6: Final answer
    x = 237,652,670.46

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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.