Home / 305,742.28-421,910.13-169,784.83

Finding the Fourth Proportional to 305,742.28, 421,910.13 and 169,784.83

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Solution

The fourth proportional to 305,742.28, 421,910.13 and 169,784.83 is: 234,295.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,742.28 : 421,910.13 = 169,784.83 : x
  2. Step 2: Convert to fraction form
    305,742.28/421,910.13 = 169,784.83/x
  3. Step 3: Cross multiply
    305,742.28x = 421,910.13 × 169,784.83
  4. Step 4: Simplify right side
    305,742.28x = 71,633,939,697.33
  5. Step 5: Solve for x
    x = 71,633,939,697.33/305,742.28
  6. Step 6: Final answer
    x = 234,295.17

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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.