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Finding the Fourth Proportional to 529,108.43, 730,173.58 and 287,390.94

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Solution

The fourth proportional to 529,108.43, 730,173.58 and 287,390.94 is: 396,601.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,108.43 : 730,173.58 = 287,390.94 : x
  2. Step 2: Convert to fraction form
    529,108.43/730,173.58 = 287,390.94/x
  3. Step 3: Cross multiply
    529,108.43x = 730,173.58 × 287,390.94
  4. Step 4: Simplify right side
    529,108.43x = 209,845,267,658.59
  5. Step 5: Solve for x
    x = 209,845,267,658.59/529,108.43
  6. Step 6: Final answer
    x = 396,601.64

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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.