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Finding the Fourth Proportional to 305,398.55, 421,500.60 and 169,476.17

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Solution

The fourth proportional to 305,398.55, 421,500.60 and 169,476.17 is: 233,905.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,398.55 : 421,500.60 = 169,476.17 : x
  2. Step 2: Convert to fraction form
    305,398.55/421,500.60 = 169,476.17/x
  3. Step 3: Cross multiply
    305,398.55x = 421,500.60 × 169,476.17
  4. Step 4: Simplify right side
    305,398.55x = 71,434,305,233.20
  5. Step 5: Solve for x
    x = 71,434,305,233.20/305,398.55
  6. Step 6: Final answer
    x = 233,905.19

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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.