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Finding the Fourth Proportional to 305,408.84, 421,449.98 and 169,441.34

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Solution

The fourth proportional to 305,408.84, 421,449.98 and 169,441.34 is: 233,821.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,408.84 : 421,449.98 = 169,441.34 : x
  2. Step 2: Convert to fraction form
    305,408.84/421,449.98 = 169,441.34/x
  3. Step 3: Cross multiply
    305,408.84x = 421,449.98 × 169,441.34
  4. Step 4: Simplify right side
    305,408.84x = 71,411,046,399.72
  5. Step 5: Solve for x
    x = 71,411,046,399.72/305,408.84
  6. Step 6: Final answer
    x = 233,821.15

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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.