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Finding the Fourth Proportional to 352,638.60, 528,083.10 and 282,654.60

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Solution

The fourth proportional to 352,638.60, 528,083.10 and 282,654.60 is: 423,280.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,638.60 : 528,083.10 = 282,654.60 : x
  2. Step 2: Convert to fraction form
    352,638.60/528,083.10 = 282,654.60/x
  3. Step 3: Cross multiply
    352,638.60x = 528,083.10 × 282,654.60
  4. Step 4: Simplify right side
    352,638.60x = 149,265,117,397.26
  5. Step 5: Solve for x
    x = 149,265,117,397.26/352,638.60
  6. Step 6: Final answer
    x = 423,280.71

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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.