Home / 320,938.66-481,429.86-84,280.96

Finding the Fourth Proportional to 320,938.66, 481,429.86 and 84,280.96

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Solution

The fourth proportional to 320,938.66, 481,429.86 and 84,280.96 is: 126,427.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,938.66 : 481,429.86 = 84,280.96 : x
  2. Step 2: Convert to fraction form
    320,938.66/481,429.86 = 84,280.96/x
  3. Step 3: Cross multiply
    320,938.66x = 481,429.86 × 84,280.96
  4. Step 4: Simplify right side
    320,938.66x = 40,575,370,773.47
  5. Step 5: Solve for x
    x = 40,575,370,773.47/320,938.66
  6. Step 6: Final answer
    x = 126,427.18

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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.