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Finding the Fourth Proportional to 529,214.62, 730,321.24 and 287,499.02

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Solution

The fourth proportional to 529,214.62, 730,321.24 and 287,499.02 is: 396,751.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,214.62 : 730,321.24 = 287,499.02 : x
  2. Step 2: Convert to fraction form
    529,214.62/730,321.24 = 287,499.02/x
  3. Step 3: Cross multiply
    529,214.62x = 730,321.24 × 287,499.02
  4. Step 4: Simplify right side
    529,214.62x = 209,966,640,785.19
  5. Step 5: Solve for x
    x = 209,966,640,785.19/529,214.62
  6. Step 6: Final answer
    x = 396,751.40

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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.