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Finding the Fourth Proportional to 203,740.25, 305,541.16 and 70,589.42

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Solution

The fourth proportional to 203,740.25, 305,541.16 and 70,589.42 is: 105,860.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,740.25 : 305,541.16 = 70,589.42 : x
  2. Step 2: Convert to fraction form
    203,740.25/305,541.16 = 70,589.42/x
  3. Step 3: Cross multiply
    203,740.25x = 305,541.16 × 70,589.42
  4. Step 4: Simplify right side
    203,740.25x = 21,567,971,566.35
  5. Step 5: Solve for x
    x = 21,567,971,566.35/203,740.25
  6. Step 6: Final answer
    x = 105,860.14

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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.