Home / 305,205.12-421,175.52-169,239.60

Finding the Fourth Proportional to 305,205.12, 421,175.52 and 169,239.60

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Solution

The fourth proportional to 305,205.12, 421,175.52 and 169,239.60 is: 233,546.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,205.12 : 421,175.52 = 169,239.60 : x
  2. Step 2: Convert to fraction form
    305,205.12/421,175.52 = 169,239.60/x
  3. Step 3: Cross multiply
    305,205.12x = 421,175.52 × 169,239.60
  4. Step 4: Simplify right side
    305,205.12x = 71,279,576,534.59
  5. Step 5: Solve for x
    x = 71,279,576,534.59/305,205.12
  6. Step 6: Final answer
    x = 233,546.46

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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.