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Finding the Fourth Proportional to 529,194.81, 730,261.20 and 287,476.62

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Solution

The fourth proportional to 529,194.81, 730,261.20 and 287,476.62 is: 396,702.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,194.81 : 730,261.20 = 287,476.62 : x
  2. Step 2: Convert to fraction form
    529,194.81/730,261.20 = 287,476.62/x
  3. Step 3: Cross multiply
    529,194.81x = 730,261.20 × 287,476.62
  4. Step 4: Simplify right side
    529,194.81x = 209,933,021,493.14
  5. Step 5: Solve for x
    x = 209,933,021,493.14/529,194.81
  6. Step 6: Final answer
    x = 396,702.72

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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.