Home / 397,145.13-548,063.94-215,857.47

Finding the Fourth Proportional to 397,145.13, 548,063.94 and 215,857.47

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Solution

The fourth proportional to 397,145.13, 548,063.94 and 215,857.47 is: 297,885.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,145.13 : 548,063.94 = 215,857.47 : x
  2. Step 2: Convert to fraction form
    397,145.13/548,063.94 = 215,857.47/x
  3. Step 3: Cross multiply
    397,145.13x = 548,063.94 × 215,857.47
  4. Step 4: Simplify right side
    397,145.13x = 118,303,695,486.63
  5. Step 5: Solve for x
    x = 118,303,695,486.63/397,145.13
  6. Step 6: Final answer
    x = 297,885.30

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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.