Home / 318,513.36-439,365.60-199,074

Finding the Fourth Proportional to 318,513.36, 439,365.60 and 199,074

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Solution

The fourth proportional to 318,513.36, 439,365.60 and 199,074 is: 274,607.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,513.36 : 439,365.60 = 199,074 : x
  2. Step 2: Convert to fraction form
    318,513.36/439,365.60 = 199,074/x
  3. Step 3: Cross multiply
    318,513.36x = 439,365.60 × 199,074
  4. Step 4: Simplify right side
    318,513.36x = 87,466,267,454.40
  5. Step 5: Solve for x
    x = 87,466,267,454.40/318,513.36
  6. Step 6: Final answer
    x = 274,607.85

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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.