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Finding the Fourth Proportional to 395,150.59, 545,303.10 and 213,858.21

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Solution

The fourth proportional to 395,150.59, 545,303.10 and 213,858.21 is: 295,121.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,150.59 : 545,303.10 = 213,858.21 : x
  2. Step 2: Convert to fraction form
    395,150.59/545,303.10 = 213,858.21/x
  3. Step 3: Cross multiply
    395,150.59x = 545,303.10 × 213,858.21
  4. Step 4: Simplify right side
    395,150.59x = 116,617,544,873.45
  5. Step 5: Solve for x
    x = 116,617,544,873.45/395,150.59
  6. Step 6: Final answer
    x = 295,121.78

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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.