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Finding the Fourth Proportional to 276,259.40, 414,376.92 and 86,715.32

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Solution

The fourth proportional to 276,259.40, 414,376.92 and 86,715.32 is: 130,069.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,259.40 : 414,376.92 = 86,715.32 : x
  2. Step 2: Convert to fraction form
    276,259.40/414,376.92 = 86,715.32/x
  3. Step 3: Cross multiply
    276,259.40x = 414,376.92 × 86,715.32
  4. Step 4: Simplify right side
    276,259.40x = 35,932,827,218.41
  5. Step 5: Solve for x
    x = 35,932,827,218.41/276,259.40
  6. Step 6: Final answer
    x = 130,069.16

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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.