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Finding the Fourth Proportional to 352,615.62, 528,741.03 and 142,196.42

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Solution

The fourth proportional to 352,615.62, 528,741.03 and 142,196.42 is: 213,221.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,615.62 : 528,741.03 = 142,196.42 : x
  2. Step 2: Convert to fraction form
    352,615.62/528,741.03 = 142,196.42/x
  3. Step 3: Cross multiply
    352,615.62x = 528,741.03 × 142,196.42
  4. Step 4: Simplify right side
    352,615.62x = 75,185,081,573.11
  5. Step 5: Solve for x
    x = 75,185,081,573.11/352,615.62
  6. Step 6: Final answer
    x = 213,221.08

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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.