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Finding the Fourth Proportional to 276,656.80, 415,033.80 and 99,266.80

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Solution

The fourth proportional to 276,656.80, 415,033.80 and 99,266.80 is: 148,917.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,656.80 : 415,033.80 = 99,266.80 : x
  2. Step 2: Convert to fraction form
    276,656.80/415,033.80 = 99,266.80/x
  3. Step 3: Cross multiply
    276,656.80x = 415,033.80 × 99,266.80
  4. Step 4: Simplify right side
    276,656.80x = 41,199,077,217.84
  5. Step 5: Solve for x
    x = 41,199,077,217.84/276,656.80
  6. Step 6: Final answer
    x = 148,917.64

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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.