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Finding the Fourth Proportional to 305,890.70, 422,117.44 and 169,933.20

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Solution

The fourth proportional to 305,890.70, 422,117.44 and 169,933.20 is: 234,501.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,890.70 : 422,117.44 = 169,933.20 : x
  2. Step 2: Convert to fraction form
    305,890.70/422,117.44 = 169,933.20/x
  3. Step 3: Cross multiply
    305,890.70x = 422,117.44 × 169,933.20
  4. Step 4: Simplify right side
    305,890.70x = 71,731,767,355.01
  5. Step 5: Solve for x
    x = 71,731,767,355.01/305,890.70
  6. Step 6: Final answer
    x = 234,501.30

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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.