Home / 397,255.02-548,222.75-215,979.15

Finding the Fourth Proportional to 397,255.02, 548,222.75 and 215,979.15

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Solution

The fourth proportional to 397,255.02, 548,222.75 and 215,979.15 is: 298,057.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,255.02 : 548,222.75 = 215,979.15 : x
  2. Step 2: Convert to fraction form
    397,255.02/548,222.75 = 215,979.15/x
  3. Step 3: Cross multiply
    397,255.02x = 548,222.75 × 215,979.15
  4. Step 4: Simplify right side
    397,255.02x = 118,404,683,555.66
  5. Step 5: Solve for x
    x = 118,404,683,555.66/397,255.02
  6. Step 6: Final answer
    x = 298,057.11

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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.