Home / 397,116.31-548,024.75-215,828.25

Finding the Fourth Proportional to 397,116.31, 548,024.75 and 215,828.25

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Solution

The fourth proportional to 397,116.31, 548,024.75 and 215,828.25 is: 297,845.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,116.31 : 548,024.75 = 215,828.25 : x
  2. Step 2: Convert to fraction form
    397,116.31/548,024.75 = 215,828.25/x
  3. Step 3: Cross multiply
    397,116.31x = 548,024.75 × 215,828.25
  4. Step 4: Simplify right side
    397,116.31x = 118,279,222,749.19
  5. Step 5: Solve for x
    x = 118,279,222,749.19/397,116.31
  6. Step 6: Final answer
    x = 297,845.29

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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.