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Finding the Fourth Proportional to 526,640.32, 790,042.40 and 171,571.68

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Solution

The fourth proportional to 526,640.32, 790,042.40 and 171,571.68 is: 257,384.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,640.32 : 790,042.40 = 171,571.68 : x
  2. Step 2: Convert to fraction form
    526,640.32/790,042.40 = 171,571.68/x
  3. Step 3: Cross multiply
    526,640.32x = 790,042.40 × 171,571.68
  4. Step 4: Simplify right side
    526,640.32x = 135,548,901,839.23
  5. Step 5: Solve for x
    x = 135,548,901,839.23/526,640.32
  6. Step 6: Final answer
    x = 257,384.21

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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.