Home / 395,186.07-545,350.75-220,758.55

Finding the Fourth Proportional to 395,186.07, 545,350.75 and 220,758.55

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Solution

The fourth proportional to 395,186.07, 545,350.75 and 220,758.55 is: 304,643.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,186.07 : 545,350.75 = 220,758.55 : x
  2. Step 2: Convert to fraction form
    395,186.07/545,350.75 = 220,758.55/x
  3. Step 3: Cross multiply
    395,186.07x = 545,350.75 × 220,758.55
  4. Step 4: Simplify right side
    395,186.07x = 120,390,842,580.53
  5. Step 5: Solve for x
    x = 120,390,842,580.53/395,186.07
  6. Step 6: Final answer
    x = 304,643.44

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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.