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Finding the Fourth Proportional to 305,598.29, 421,729.31 and 169,634.93

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Solution

The fourth proportional to 305,598.29, 421,729.31 and 169,634.93 is: 234,098.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,598.29 : 421,729.31 = 169,634.93 : x
  2. Step 2: Convert to fraction form
    305,598.29/421,729.31 = 169,634.93/x
  3. Step 3: Cross multiply
    305,598.29x = 421,729.31 × 169,634.93
  4. Step 4: Simplify right side
    305,598.29x = 71,540,020,296.24
  5. Step 5: Solve for x
    x = 71,540,020,296.24/305,598.29
  6. Step 6: Final answer
    x = 234,098.24

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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.