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Finding the Fourth Proportional to 552,062.64, 828,126.81 and 215,040.72

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Solution

The fourth proportional to 552,062.64, 828,126.81 and 215,040.72 is: 322,573.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,062.64 : 828,126.81 = 215,040.72 : x
  2. Step 2: Convert to fraction form
    552,062.64/828,126.81 = 215,040.72/x
  3. Step 3: Cross multiply
    552,062.64x = 828,126.81 × 215,040.72
  4. Step 4: Simplify right side
    552,062.64x = 178,080,985,473.70
  5. Step 5: Solve for x
    x = 178,080,985,473.70/552,062.64
  6. Step 6: Final answer
    x = 322,573.88

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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.