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Finding the Fourth Proportional to 357,979.89, 536,894.31 and 105,191.73

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Solution

The fourth proportional to 357,979.89, 536,894.31 and 105,191.73 is: 157,765.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,979.89 : 536,894.31 = 105,191.73 : x
  2. Step 2: Convert to fraction form
    357,979.89/536,894.31 = 105,191.73/x
  3. Step 3: Cross multiply
    357,979.89x = 536,894.31 × 105,191.73
  4. Step 4: Simplify right side
    357,979.89x = 56,476,841,296.06
  5. Step 5: Solve for x
    x = 56,476,841,296.06/357,979.89
  6. Step 6: Final answer
    x = 157,765.40

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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.