Home / 305,228.38-421,236.76-169,275.35

Finding the Fourth Proportional to 305,228.38, 421,236.76 and 169,275.35

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Solution

The fourth proportional to 305,228.38, 421,236.76 and 169,275.35 is: 233,611.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,228.38 : 421,236.76 = 169,275.35 : x
  2. Step 2: Convert to fraction form
    305,228.38/421,236.76 = 169,275.35/x
  3. Step 3: Cross multiply
    305,228.38x = 421,236.76 × 169,275.35
  4. Step 4: Simplify right side
    305,228.38x = 71,304,999,981.87
  5. Step 5: Solve for x
    x = 71,304,999,981.87/305,228.38
  6. Step 6: Final answer
    x = 233,611.96

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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.