Home / 305,211.17-421,189.30-169,245.20

Finding the Fourth Proportional to 305,211.17, 421,189.30 and 169,245.20

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Solution

The fourth proportional to 305,211.17, 421,189.30 and 169,245.20 is: 233,557.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,211.17 : 421,189.30 = 169,245.20 : x
  2. Step 2: Convert to fraction form
    305,211.17/421,189.30 = 169,245.20/x
  3. Step 3: Cross multiply
    305,211.17x = 421,189.30 × 169,245.20
  4. Step 4: Simplify right side
    305,211.17x = 71,284,267,316.36
  5. Step 5: Solve for x
    x = 71,284,267,316.36/305,211.17
  6. Step 6: Final answer
    x = 233,557.20

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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.