Home / 397,118.30-548,023.22-215,830.64

Finding the Fourth Proportional to 397,118.30, 548,023.22 and 215,830.64

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Solution

The fourth proportional to 397,118.30, 548,023.22 and 215,830.64 is: 297,846.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,118.30 : 548,023.22 = 215,830.64 : x
  2. Step 2: Convert to fraction form
    397,118.30/548,023.22 = 215,830.64/x
  3. Step 3: Cross multiply
    397,118.30x = 548,023.22 × 215,830.64
  4. Step 4: Simplify right side
    397,118.30x = 118,280,202,307.46
  5. Step 5: Solve for x
    x = 118,280,202,307.46/397,118.30
  6. Step 6: Final answer
    x = 297,846.26

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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.