Home / 320,683.23-442,512.71-217,106.73

Finding the Fourth Proportional to 320,683.23, 442,512.71 and 217,106.73

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Solution

The fourth proportional to 320,683.23, 442,512.71 and 217,106.73 is: 299,586.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,683.23 : 442,512.71 = 217,106.73 : x
  2. Step 2: Convert to fraction form
    320,683.23/442,512.71 = 217,106.73/x
  3. Step 3: Cross multiply
    320,683.23x = 442,512.71 × 217,106.73
  4. Step 4: Simplify right side
    320,683.23x = 96,072,486,366.00
  5. Step 5: Solve for x
    x = 96,072,486,366.00/320,683.23
  6. Step 6: Final answer
    x = 299,586.87

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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.