Home / 320,684.96-442,515.09-217,108.46

Finding the Fourth Proportional to 320,684.96, 442,515.09 and 217,108.46

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Solution

The fourth proportional to 320,684.96, 442,515.09 and 217,108.46 is: 299,589.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,684.96 : 442,515.09 = 217,108.46 : x
  2. Step 2: Convert to fraction form
    320,684.96/442,515.09 = 217,108.46/x
  3. Step 3: Cross multiply
    320,684.96x = 442,515.09 × 217,108.46
  4. Step 4: Simplify right side
    320,684.96x = 96,073,767,504.09
  5. Step 5: Solve for x
    x = 96,073,767,504.09/320,684.96
  6. Step 6: Final answer
    x = 299,589.26

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1.5x scale

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.