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Finding the Fourth Proportional to 386,573.50, 533,704.71 and 252,670.78

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Solution

The fourth proportional to 386,573.50, 533,704.71 and 252,670.78 is: 348,838.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,573.50 : 533,704.71 = 252,670.78 : x
  2. Step 2: Convert to fraction form
    386,573.50/533,704.71 = 252,670.78/x
  3. Step 3: Cross multiply
    386,573.50x = 533,704.71 × 252,670.78
  4. Step 4: Simplify right side
    386,573.50x = 134,851,585,365.37
  5. Step 5: Solve for x
    x = 134,851,585,365.37/386,573.50
  6. Step 6: Final answer
    x = 348,838.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.