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Finding the Fourth Proportional to 363,055.80, 543,417.30 and 258,079.80

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Solution

The fourth proportional to 363,055.80, 543,417.30 and 258,079.80 is: 386,290.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,055.80 : 543,417.30 = 258,079.80 : x
  2. Step 2: Convert to fraction form
    363,055.80/543,417.30 = 258,079.80/x
  3. Step 3: Cross multiply
    363,055.80x = 543,417.30 × 258,079.80
  4. Step 4: Simplify right side
    363,055.80x = 140,245,028,100.54
  5. Step 5: Solve for x
    x = 140,245,028,100.54/363,055.80
  6. Step 6: Final answer
    x = 386,290.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.