Home / 217,421.20-299,969.50-131,347.96

Finding the Fourth Proportional to 217,421.20, 299,969.50 and 131,347.96

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Solution

The fourth proportional to 217,421.20, 299,969.50 and 131,347.96 is: 181,216.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,421.20 : 299,969.50 = 131,347.96 : x
  2. Step 2: Convert to fraction form
    217,421.20/299,969.50 = 131,347.96/x
  3. Step 3: Cross multiply
    217,421.20x = 299,969.50 × 131,347.96
  4. Step 4: Simplify right side
    217,421.20x = 39,400,381,887.22
  5. Step 5: Solve for x
    x = 39,400,381,887.22/217,421.20
  6. Step 6: Final answer
    x = 181,216.84

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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.