Home / 305,985.28-422,248.80-170,017.60

Finding the Fourth Proportional to 305,985.28, 422,248.80 and 170,017.60

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Solution

The fourth proportional to 305,985.28, 422,248.80 and 170,017.60 is: 234,618.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,985.28 : 422,248.80 = 170,017.60 : x
  2. Step 2: Convert to fraction form
    305,985.28/422,248.80 = 170,017.60/x
  3. Step 3: Cross multiply
    305,985.28x = 422,248.80 × 170,017.60
  4. Step 4: Simplify right side
    305,985.28x = 71,789,727,578.88
  5. Step 5: Solve for x
    x = 71,789,727,578.88/305,985.28
  6. Step 6: Final answer
    x = 234,618.24

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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.