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Finding the Fourth Proportional to 215,396.55, 297,239.22 and 119,901.20

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Solution

The fourth proportional to 215,396.55, 297,239.22 and 119,901.20 is: 165,459.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,396.55 : 297,239.22 = 119,901.20 : x
  2. Step 2: Convert to fraction form
    215,396.55/297,239.22 = 119,901.20/x
  3. Step 3: Cross multiply
    215,396.55x = 297,239.22 × 119,901.20
  4. Step 4: Simplify right side
    215,396.55x = 35,639,337,678.87
  5. Step 5: Solve for x
    x = 35,639,337,678.87/215,396.55
  6. Step 6: Final answer
    x = 165,459.19

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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.