Home / 215,918.80-297,968.48-120,431.68

Finding the Fourth Proportional to 215,918.80, 297,968.48 and 120,431.68

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Solution

The fourth proportional to 215,918.80, 297,968.48 and 120,431.68 is: 166,196.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,918.80 : 297,968.48 = 120,431.68 : x
  2. Step 2: Convert to fraction form
    215,918.80/297,968.48 = 120,431.68/x
  3. Step 3: Cross multiply
    215,918.80x = 297,968.48 × 120,431.68
  4. Step 4: Simplify right side
    215,918.80x = 35,884,844,633.45
  5. Step 5: Solve for x
    x = 35,884,844,633.45/215,918.80
  6. Step 6: Final answer
    x = 166,196.02

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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.