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Finding the Fourth Proportional to 215,603.68, 297,540.68 and 120,116.20

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Solution

The fourth proportional to 215,603.68, 297,540.68 and 120,116.20 is: 165,764.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,603.68 : 297,540.68 = 120,116.20 : x
  2. Step 2: Convert to fraction form
    215,603.68/297,540.68 = 120,116.20/x
  3. Step 3: Cross multiply
    215,603.68x = 297,540.68 × 120,116.20
  4. Step 4: Simplify right side
    215,603.68x = 35,739,455,827.02
  5. Step 5: Solve for x
    x = 35,739,455,827.02/215,603.68
  6. Step 6: Final answer
    x = 165,764.59

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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.