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Finding the Fourth Proportional to 301,311.85, 415,809.21 and 165,348.08

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Solution

The fourth proportional to 301,311.85, 415,809.21 and 165,348.08 is: 228,179.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,311.85 : 415,809.21 = 165,348.08 : x
  2. Step 2: Convert to fraction form
    301,311.85/415,809.21 = 165,348.08/x
  3. Step 3: Cross multiply
    301,311.85x = 415,809.21 × 165,348.08
  4. Step 4: Simplify right side
    301,311.85x = 68,753,254,519.82
  5. Step 5: Solve for x
    x = 68,753,254,519.82/301,311.85
  6. Step 6: Final answer
    x = 228,179.72

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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.