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Finding the Fourth Proportional to 276,211.48, 414,322.62 and 86,667.88

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Solution

The fourth proportional to 276,211.48, 414,322.62 and 86,667.88 is: 130,003.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,211.48 : 414,322.62 = 86,667.88 : x
  2. Step 2: Convert to fraction form
    276,211.48/414,322.62 = 86,667.88/x
  3. Step 3: Cross multiply
    276,211.48x = 414,322.62 × 86,667.88
  4. Step 4: Simplify right side
    276,211.48x = 35,908,463,111.45
  5. Step 5: Solve for x
    x = 35,908,463,111.45/276,211.48
  6. Step 6: Final answer
    x = 130,003.51

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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.