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Finding the Fourth Proportional to 352,403.02, 528,604.52 and 86,160.36

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Solution

The fourth proportional to 352,403.02, 528,604.52 and 86,160.36 is: 129,240.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,403.02 : 528,604.52 = 86,160.36 : x
  2. Step 2: Convert to fraction form
    352,403.02/528,604.52 = 86,160.36/x
  3. Step 3: Cross multiply
    352,403.02x = 528,604.52 × 86,160.36
  4. Step 4: Simplify right side
    352,403.02x = 45,544,755,740.83
  5. Step 5: Solve for x
    x = 45,544,755,740.83/352,403.02
  6. Step 6: Final answer
    x = 129,240.54

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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.