Home / 305,623.58-421,765.20-169,666.29

Finding the Fourth Proportional to 305,623.58, 421,765.20 and 169,666.29

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Solution

The fourth proportional to 305,623.58, 421,765.20 and 169,666.29 is: 234,142.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,623.58 : 421,765.20 = 169,666.29 : x
  2. Step 2: Convert to fraction form
    305,623.58/421,765.20 = 169,666.29/x
  3. Step 3: Cross multiply
    305,623.58x = 421,765.20 × 169,666.29
  4. Step 4: Simplify right side
    305,623.58x = 71,559,336,735.11
  5. Step 5: Solve for x
    x = 71,559,336,735.11/305,623.58
  6. Step 6: Final answer
    x = 234,142.07

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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.