Home / 253,749.23-380,385.43-85,151.31

Finding the Fourth Proportional to 253,749.23, 380,385.43 and 85,151.31

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Solution

The fourth proportional to 253,749.23, 380,385.43 and 85,151.31 is: 127,646.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,749.23 : 380,385.43 = 85,151.31 : x
  2. Step 2: Convert to fraction form
    253,749.23/380,385.43 = 85,151.31/x
  3. Step 3: Cross multiply
    253,749.23x = 380,385.43 × 85,151.31
  4. Step 4: Simplify right side
    253,749.23x = 32,390,317,669.41
  5. Step 5: Solve for x
    x = 32,390,317,669.41/253,749.23
  6. Step 6: Final answer
    x = 127,646.96

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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.