Home / 438,067.20-657,122.40-228,115.20

Finding the Fourth Proportional to 438,067.20, 657,122.40 and 228,115.20

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Solution

The fourth proportional to 438,067.20, 657,122.40 and 228,115.20 is: 342,184.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,067.20 : 657,122.40 = 228,115.20 : x
  2. Step 2: Convert to fraction form
    438,067.20/657,122.40 = 228,115.20/x
  3. Step 3: Cross multiply
    438,067.20x = 657,122.40 × 228,115.20
  4. Step 4: Simplify right side
    438,067.20x = 149,899,607,700.48
  5. Step 5: Solve for x
    x = 149,899,607,700.48/438,067.20
  6. Step 6: Final answer
    x = 342,184.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.