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Finding the Fourth Proportional to 238,247.93, 357,286.55 and 86,406.68

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Solution

The fourth proportional to 238,247.93, 357,286.55 and 86,406.68 is: 129,579.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,247.93 : 357,286.55 = 86,406.68 : x
  2. Step 2: Convert to fraction form
    238,247.93/357,286.55 = 86,406.68/x
  3. Step 3: Cross multiply
    238,247.93x = 357,286.55 × 86,406.68
  4. Step 4: Simplify right side
    238,247.93x = 30,871,945,055.34
  5. Step 5: Solve for x
    x = 30,871,945,055.34/238,247.93
  6. Step 6: Final answer
    x = 129,579.07

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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.