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Finding the Fourth Proportional to 529,138.58, 730,326.78 and 325,364.85

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Solution

The fourth proportional to 529,138.58, 730,326.78 and 325,364.85 is: 449,074.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,138.58 : 730,326.78 = 325,364.85 : x
  2. Step 2: Convert to fraction form
    529,138.58/730,326.78 = 325,364.85/x
  3. Step 3: Cross multiply
    529,138.58x = 730,326.78 × 325,364.85
  4. Step 4: Simplify right side
    529,138.58x = 237,622,663,225.68
  5. Step 5: Solve for x
    x = 237,622,663,225.68/529,138.58
  6. Step 6: Final answer
    x = 449,074.54

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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.