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Finding the Fourth Proportional to 529,216.42, 730,321.63 and 287,499.56

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Solution

The fourth proportional to 529,216.42, 730,321.63 and 287,499.56 is: 396,751.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,216.42 : 730,321.63 = 287,499.56 : x
  2. Step 2: Convert to fraction form
    529,216.42/730,321.63 = 287,499.56/x
  3. Step 3: Cross multiply
    529,216.42x = 730,321.63 × 287,499.56
  4. Step 4: Simplify right side
    529,216.42x = 209,967,148,638.37
  5. Step 5: Solve for x
    x = 209,967,148,638.37/529,216.42
  6. Step 6: Final answer
    x = 396,751.01

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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.