Home / 395,015.15-545,117.03-213,723.10

Finding the Fourth Proportional to 395,015.15, 545,117.03 and 213,723.10

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Solution

The fourth proportional to 395,015.15, 545,117.03 and 213,723.10 is: 294,935.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,015.15 : 545,117.03 = 213,723.10 : x
  2. Step 2: Convert to fraction form
    395,015.15/545,117.03 = 213,723.10/x
  3. Step 3: Cross multiply
    395,015.15x = 545,117.03 × 213,723.10
  4. Step 4: Simplify right side
    395,015.15x = 116,504,101,514.39
  5. Step 5: Solve for x
    x = 116,504,101,514.39/395,015.15
  6. Step 6: Final answer
    x = 294,935.78

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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.