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Finding the Fourth Proportional to 529,332.25, 730,481.77 and 287,615.50

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Solution

The fourth proportional to 529,332.25, 730,481.77 and 287,615.50 is: 396,911.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,332.25 : 730,481.77 = 287,615.50 : x
  2. Step 2: Convert to fraction form
    529,332.25/730,481.77 = 287,615.50/x
  3. Step 3: Cross multiply
    529,332.25x = 730,481.77 × 287,615.50
  4. Step 4: Simplify right side
    529,332.25x = 210,097,879,519.44
  5. Step 5: Solve for x
    x = 210,097,879,519.44/529,332.25
  6. Step 6: Final answer
    x = 396,911.16

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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.