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Finding the Fourth Proportional to 203,514.93, 305,318.90 and 70,395.07

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Solution

The fourth proportional to 203,514.93, 305,318.90 and 70,395.07 is: 105,608.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,514.93 : 305,318.90 = 70,395.07 : x
  2. Step 2: Convert to fraction form
    203,514.93/305,318.90 = 70,395.07/x
  3. Step 3: Cross multiply
    203,514.93x = 305,318.90 × 70,395.07
  4. Step 4: Simplify right side
    203,514.93x = 21,492,945,337.82
  5. Step 5: Solve for x
    x = 21,492,945,337.82/203,514.93
  6. Step 6: Final answer
    x = 105,608.69

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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.