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Finding the Fourth Proportional to 352,779.88, 529,171.26 and 86,542.12

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Solution

The fourth proportional to 352,779.88, 529,171.26 and 86,542.12 is: 129,813.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,779.88 : 529,171.26 = 86,542.12 : x
  2. Step 2: Convert to fraction form
    352,779.88/529,171.26 = 86,542.12/x
  3. Step 3: Cross multiply
    352,779.88x = 529,171.26 × 86,542.12
  4. Step 4: Simplify right side
    352,779.88x = 45,795,602,683.47
  5. Step 5: Solve for x
    x = 45,795,602,683.47/352,779.88
  6. Step 6: Final answer
    x = 129,813.53

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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.