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Finding the Fourth Proportional to 305,572.84, 421,684.16 and 169,598.81

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Solution

The fourth proportional to 305,572.84, 421,684.16 and 169,598.81 is: 234,042.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,572.84 : 421,684.16 = 169,598.81 : x
  2. Step 2: Convert to fraction form
    305,572.84/421,684.16 = 169,598.81/x
  3. Step 3: Cross multiply
    305,572.84x = 421,684.16 × 169,598.81
  4. Step 4: Simplify right side
    305,572.84x = 71,517,131,731.85
  5. Step 5: Solve for x
    x = 71,517,131,731.85/305,572.84
  6. Step 6: Final answer
    x = 234,042.83

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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.