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Finding the Fourth Proportional to 305,580.30, 421,694.28 and 169,606.32

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Solution

The fourth proportional to 305,580.30, 421,694.28 and 169,606.32 is: 234,053.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,580.30 : 421,694.28 = 169,606.32 : x
  2. Step 2: Convert to fraction form
    305,580.30/421,694.28 = 169,606.32/x
  3. Step 3: Cross multiply
    305,580.30x = 421,694.28 × 169,606.32
  4. Step 4: Simplify right side
    305,580.30x = 71,522,014,995.85
  5. Step 5: Solve for x
    x = 71,522,014,995.85/305,580.30
  6. Step 6: Final answer
    x = 234,053.10

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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.