Home / 211,515.23-291,905.86-120,884.60

Finding the Fourth Proportional to 211,515.23, 291,905.86 and 120,884.60

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Solution

The fourth proportional to 211,515.23, 291,905.86 and 120,884.60 is: 166,829.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,515.23 : 291,905.86 = 120,884.60 : x
  2. Step 2: Convert to fraction form
    211,515.23/291,905.86 = 120,884.60/x
  3. Step 3: Cross multiply
    211,515.23x = 291,905.86 × 120,884.60
  4. Step 4: Simplify right side
    211,515.23x = 35,286,921,362.02
  5. Step 5: Solve for x
    x = 35,286,921,362.02/211,515.23
  6. Step 6: Final answer
    x = 166,829.23

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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.