Home / 397,147.13-548,066.70-215,859.47

Finding the Fourth Proportional to 397,147.13, 548,066.70 and 215,859.47

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Solution

The fourth proportional to 397,147.13, 548,066.70 and 215,859.47 is: 297,888.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,147.13 : 548,066.70 = 215,859.47 : x
  2. Step 2: Convert to fraction form
    397,147.13/548,066.70 = 215,859.47/x
  3. Step 3: Cross multiply
    397,147.13x = 548,066.70 × 215,859.47
  4. Step 4: Simplify right side
    397,147.13x = 118,305,387,386.65
  5. Step 5: Solve for x
    x = 118,305,387,386.65/397,147.13
  6. Step 6: Final answer
    x = 297,888.06

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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.