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Finding the Fourth Proportional to 575,200.20, 862,071.30 and 219,739.80

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Solution

The fourth proportional to 575,200.20, 862,071.30 and 219,739.80 is: 329,331.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,200.20 : 862,071.30 = 219,739.80 : x
  2. Step 2: Convert to fraction form
    575,200.20/862,071.30 = 219,739.80/x
  3. Step 3: Cross multiply
    575,200.20x = 862,071.30 × 219,739.80
  4. Step 4: Simplify right side
    575,200.20x = 189,431,375,047.74
  5. Step 5: Solve for x
    x = 189,431,375,047.74/575,200.20
  6. Step 6: Final answer
    x = 329,331.21

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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.