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Finding the Fourth Proportional to 353,452.59, 529,862.49 and 128,654.49

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Solution

The fourth proportional to 353,452.59, 529,862.49 and 128,654.49 is: 192,866.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,452.59 : 529,862.49 = 128,654.49 : x
  2. Step 2: Convert to fraction form
    353,452.59/529,862.49 = 128,654.49/x
  3. Step 3: Cross multiply
    353,452.59x = 529,862.49 × 128,654.49
  4. Step 4: Simplify right side
    353,452.59x = 68,169,188,421.08
  5. Step 5: Solve for x
    x = 68,169,188,421.08/353,452.59
  6. Step 6: Final answer
    x = 192,866.57

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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.