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Finding the Fourth Proportional to 215,455.38, 297,328.38 and 119,984.64

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Solution

The fourth proportional to 215,455.38, 297,328.38 and 119,984.64 is: 165,578.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,455.38 : 297,328.38 = 119,984.64 : x
  2. Step 2: Convert to fraction form
    215,455.38/297,328.38 = 119,984.64/x
  3. Step 3: Cross multiply
    215,455.38x = 297,328.38 × 119,984.64
  4. Step 4: Simplify right side
    215,455.38x = 35,674,838,636.08
  5. Step 5: Solve for x
    x = 35,674,838,636.08/215,455.38
  6. Step 6: Final answer
    x = 165,578.78

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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.