Home / 279,777,055.32-386,092,708.24-154,326,421.38

Finding the Fourth Proportional to 279,777,055.32, 386,092,708.24 and 154,326,421.38

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Solution

The fourth proportional to 279,777,055.32, 386,092,708.24 and 154,326,421.38 is: 212,970,666.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,777,055.32 : 386,092,708.24 = 154,326,421.38 : x
  2. Step 2: Convert to fraction form
    279,777,055.32/386,092,708.24 = 154,326,421.38/x
  3. Step 3: Cross multiply
    279,777,055.32x = 386,092,708.24 × 154,326,421.38
  4. Step 4: Simplify right side
    279,777,055.32x = 59,584,305,983,591,640
  5. Step 5: Solve for x
    x = 59,584,305,983,591,640/279,777,055.32
  6. Step 6: Final answer
    x = 212,970,666.65

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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.