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Finding the Fourth Proportional to 529,065.57, 730,115.75 and 287,352.86

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Solution

The fourth proportional to 529,065.57, 730,115.75 and 287,352.86 is: 396,549.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,065.57 : 730,115.75 = 287,352.86 : x
  2. Step 2: Convert to fraction form
    529,065.57/730,115.75 = 287,352.86/x
  3. Step 3: Cross multiply
    529,065.57x = 730,115.75 × 287,352.86
  4. Step 4: Simplify right side
    529,065.57x = 209,800,848,893.55
  5. Step 5: Solve for x
    x = 209,800,848,893.55/529,065.57
  6. Step 6: Final answer
    x = 396,549.81

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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.