Home / 215,808.75-297,854.55-135,305.28

Finding the Fourth Proportional to 215,808.75, 297,854.55 and 135,305.28

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Solution

The fourth proportional to 215,808.75, 297,854.55 and 135,305.28 is: 186,745.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,808.75 : 297,854.55 = 135,305.28 : x
  2. Step 2: Convert to fraction form
    215,808.75/297,854.55 = 135,305.28/x
  3. Step 3: Cross multiply
    215,808.75x = 297,854.55 × 135,305.28
  4. Step 4: Simplify right side
    215,808.75x = 40,301,293,287.02
  5. Step 5: Solve for x
    x = 40,301,293,287.02/215,808.75
  6. Step 6: Final answer
    x = 186,745.41

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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.