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Finding the Fourth Proportional to 529,528.17, 730,753.31 and 287,810.68

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Solution

The fourth proportional to 529,528.17, 730,753.31 and 287,810.68 is: 397,181.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,528.17 : 730,753.31 = 287,810.68 : x
  2. Step 2: Convert to fraction form
    529,528.17/730,753.31 = 287,810.68/x
  3. Step 3: Cross multiply
    529,528.17x = 730,753.31 × 287,810.68
  4. Step 4: Simplify right side
    529,528.17x = 210,318,607,063.35
  5. Step 5: Solve for x
    x = 210,318,607,063.35/529,528.17
  6. Step 6: Final answer
    x = 397,181.15

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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.