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Finding the Fourth Proportional to 245,318.75, 367,967.08 and 85,507.37

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Solution

The fourth proportional to 245,318.75, 367,967.08 and 85,507.37 is: 128,257.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,318.75 : 367,967.08 = 85,507.37 : x
  2. Step 2: Convert to fraction form
    245,318.75/367,967.08 = 85,507.37/x
  3. Step 3: Cross multiply
    245,318.75x = 367,967.08 × 85,507.37
  4. Step 4: Simplify right side
    245,318.75x = 31,463,897,257.38
  5. Step 5: Solve for x
    x = 31,463,897,257.38/245,318.75
  6. Step 6: Final answer
    x = 128,257.21

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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.