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Finding the Fourth Proportional to 529,090.33, 730,149.96 and 287,377.63

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Solution

The fourth proportional to 529,090.33, 730,149.96 and 287,377.63 is: 396,584.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,090.33 : 730,149.96 = 287,377.63 : x
  2. Step 2: Convert to fraction form
    529,090.33/730,149.96 = 287,377.63/x
  3. Step 3: Cross multiply
    529,090.33x = 730,149.96 × 287,377.63
  4. Step 4: Simplify right side
    529,090.33x = 209,828,765,049.40
  5. Step 5: Solve for x
    x = 209,828,765,049.40/529,090.33
  6. Step 6: Final answer
    x = 396,584.01

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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.