Home / 211,400.40-291,734.94-120,768.36

Finding the Fourth Proportional to 211,400.40, 291,734.94 and 120,768.36

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Solution

The fourth proportional to 211,400.40, 291,734.94 and 120,768.36 is: 166,661.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,400.40 : 291,734.94 = 120,768.36 : x
  2. Step 2: Convert to fraction form
    211,400.40/291,734.94 = 120,768.36/x
  3. Step 3: Cross multiply
    211,400.40x = 291,734.94 × 120,768.36
  4. Step 4: Simplify right side
    211,400.40x = 35,232,350,258.50
  5. Step 5: Solve for x
    x = 35,232,350,258.50/211,400.40
  6. Step 6: Final answer
    x = 166,661.70

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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.