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Finding the Fourth Proportional to 276,486.71, 414,729.68 and 86,963.72

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Solution

The fourth proportional to 276,486.71, 414,729.68 and 86,963.72 is: 130,445.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,486.71 : 414,729.68 = 86,963.72 : x
  2. Step 2: Convert to fraction form
    276,486.71/414,729.68 = 86,963.72/x
  3. Step 3: Cross multiply
    276,486.71x = 414,729.68 × 86,963.72
  4. Step 4: Simplify right side
    276,486.71x = 36,066,433,258.74
  5. Step 5: Solve for x
    x = 36,066,433,258.74/276,486.71
  6. Step 6: Final answer
    x = 130,445.45

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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.