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Finding the Fourth Proportional to 395,328.30, 545,552.34 and 214,040.21

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Solution

The fourth proportional to 395,328.30, 545,552.34 and 214,040.21 is: 295,375.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,328.30 : 545,552.34 = 214,040.21 : x
  2. Step 2: Convert to fraction form
    395,328.30/545,552.34 = 214,040.21/x
  3. Step 3: Cross multiply
    395,328.30x = 545,552.34 × 214,040.21
  4. Step 4: Simplify right side
    395,328.30x = 116,770,134,691.83
  5. Step 5: Solve for x
    x = 116,770,134,691.83/395,328.30
  6. Step 6: Final answer
    x = 295,375.10

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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.