Home / 217,228.15-299,758.48-121,716.39

Finding the Fourth Proportional to 217,228.15, 299,758.48 and 121,716.39

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Solution

The fourth proportional to 217,228.15, 299,758.48 and 121,716.39 is: 167,959.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,228.15 : 299,758.48 = 121,716.39 : x
  2. Step 2: Convert to fraction form
    217,228.15/299,758.48 = 121,716.39/x
  3. Step 3: Cross multiply
    217,228.15x = 299,758.48 × 121,716.39
  4. Step 4: Simplify right side
    217,228.15x = 36,485,520,057.49
  5. Step 5: Solve for x
    x = 36,485,520,057.49/217,228.15
  6. Step 6: Final answer
    x = 167,959.45

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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.