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Finding the Fourth Proportional to 305,677.80, 421,862.04 and 169,738.20

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Solution

The fourth proportional to 305,677.80, 421,862.04 and 169,738.20 is: 234,253.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,677.80 : 421,862.04 = 169,738.20 : x
  2. Step 2: Convert to fraction form
    305,677.80/421,862.04 = 169,738.20/x
  3. Step 3: Cross multiply
    305,677.80x = 421,862.04 × 169,738.20
  4. Step 4: Simplify right side
    305,677.80x = 71,606,103,317.93
  5. Step 5: Solve for x
    x = 71,606,103,317.93/305,677.80
  6. Step 6: Final answer
    x = 234,253.53

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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.