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Finding the Fourth Proportional to 220,274.64, 330,280.74 and 87,173.82

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Solution

The fourth proportional to 220,274.64, 330,280.74 and 87,173.82 is: 130,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,274.64 : 330,280.74 = 87,173.82 : x
  2. Step 2: Convert to fraction form
    220,274.64/330,280.74 = 87,173.82/x
  3. Step 3: Cross multiply
    220,274.64x = 330,280.74 × 87,173.82
  4. Step 4: Simplify right side
    220,274.64x = 28,791,833,778.23
  5. Step 5: Solve for x
    x = 28,791,833,778.23/220,274.64
  6. Step 6: Final answer
    x = 130,708.80

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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.