Home / 253,660.21-380,534.15-85,196.81

Finding the Fourth Proportional to 253,660.21, 380,534.15 and 85,196.81

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Solution

The fourth proportional to 253,660.21, 380,534.15 and 85,196.81 is: 127,809.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,660.21 : 380,534.15 = 85,196.81 : x
  2. Step 2: Convert to fraction form
    253,660.21/380,534.15 = 85,196.81/x
  3. Step 3: Cross multiply
    253,660.21x = 380,534.15 × 85,196.81
  4. Step 4: Simplify right side
    253,660.21x = 32,420,296,840.39
  5. Step 5: Solve for x
    x = 32,420,296,840.39/253,660.21
  6. Step 6: Final answer
    x = 127,809.94

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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.