Home / 320,620.95-442,461.29-199,811.07

Finding the Fourth Proportional to 320,620.95, 442,461.29 and 199,811.07

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Solution

The fourth proportional to 320,620.95, 442,461.29 and 199,811.07 is: 275,742.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,620.95 : 442,461.29 = 199,811.07 : x
  2. Step 2: Convert to fraction form
    320,620.95/442,461.29 = 199,811.07/x
  3. Step 3: Cross multiply
    320,620.95x = 442,461.29 × 199,811.07
  4. Step 4: Simplify right side
    320,620.95x = 88,408,662,789.42
  5. Step 5: Solve for x
    x = 88,408,662,789.42/320,620.95
  6. Step 6: Final answer
    x = 275,742.00

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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.