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Finding the Fourth Proportional to 529,333.25, 730,483.15 and 287,616.50

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Solution

The fourth proportional to 529,333.25, 730,483.15 and 287,616.50 is: 396,912.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,333.25 : 730,483.15 = 287,616.50 : x
  2. Step 2: Convert to fraction form
    529,333.25/730,483.15 = 287,616.50/x
  3. Step 3: Cross multiply
    529,333.25x = 730,483.15 × 287,616.50
  4. Step 4: Simplify right side
    529,333.25x = 210,099,006,911.98
  5. Step 5: Solve for x
    x = 210,099,006,911.98/529,333.25
  6. Step 6: Final answer
    x = 396,912.54

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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.