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Finding the Fourth Proportional to 305,885.19, 422,189.03 and 169,965.84

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Solution

The fourth proportional to 305,885.19, 422,189.03 and 169,965.84 is: 234,590.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,885.19 : 422,189.03 = 169,965.84 : x
  2. Step 2: Convert to fraction form
    305,885.19/422,189.03 = 169,965.84/x
  3. Step 3: Cross multiply
    305,885.19x = 422,189.03 × 169,965.84
  4. Step 4: Simplify right side
    305,885.19x = 71,757,712,272.91
  5. Step 5: Solve for x
    x = 71,757,712,272.91/305,885.19
  6. Step 6: Final answer
    x = 234,590.35

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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.