Home / 305,336.24-421,343.07-169,364.78

Finding the Fourth Proportional to 305,336.24, 421,343.07 and 169,364.78

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Solution

The fourth proportional to 305,336.24, 421,343.07 and 169,364.78 is: 233,711.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,336.24 : 421,343.07 = 169,364.78 : x
  2. Step 2: Convert to fraction form
    305,336.24/421,343.07 = 169,364.78/x
  3. Step 3: Cross multiply
    305,336.24x = 421,343.07 × 169,364.78
  4. Step 4: Simplify right side
    305,336.24x = 71,360,676,355.07
  5. Step 5: Solve for x
    x = 71,360,676,355.07/305,336.24
  6. Step 6: Final answer
    x = 233,711.78

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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.