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Finding the Fourth Proportional to 395,328.55, 545,552.68 and 214,040.46

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Solution

The fourth proportional to 395,328.55, 545,552.68 and 214,040.46 is: 295,375.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,328.55 : 545,552.68 = 214,040.46 : x
  2. Step 2: Convert to fraction form
    395,328.55/545,552.68 = 214,040.46/x
  3. Step 3: Cross multiply
    395,328.55x = 545,552.68 × 214,040.46
  4. Step 4: Simplify right side
    395,328.55x = 116,770,346,581.43
  5. Step 5: Solve for x
    x = 116,770,346,581.43/395,328.55
  6. Step 6: Final answer
    x = 295,375.45

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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.