Home / 397,108.31-548,013.70-215,820.25

Finding the Fourth Proportional to 397,108.31, 548,013.70 and 215,820.25

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Solution

The fourth proportional to 397,108.31, 548,013.70 and 215,820.25 is: 297,834.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,108.31 : 548,013.70 = 215,820.25 : x
  2. Step 2: Convert to fraction form
    397,108.31/548,013.70 = 215,820.25/x
  3. Step 3: Cross multiply
    397,108.31x = 548,013.70 × 215,820.25
  4. Step 4: Simplify right side
    397,108.31x = 118,272,450,997.36
  5. Step 5: Solve for x
    x = 118,272,450,997.36/397,108.31
  6. Step 6: Final answer
    x = 297,834.24

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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.