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Finding the Fourth Proportional to 529,094.58, 730,155.84 and 287,381.88

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Solution

The fourth proportional to 529,094.58, 730,155.84 and 287,381.88 is: 396,589.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,094.58 : 730,155.84 = 287,381.88 : x
  2. Step 2: Convert to fraction form
    529,094.58/730,155.84 = 287,381.88/x
  3. Step 3: Cross multiply
    529,094.58x = 730,155.84 × 287,381.88
  4. Step 4: Simplify right side
    529,094.58x = 209,833,557,992.18
  5. Step 5: Solve for x
    x = 209,833,557,992.18/529,094.58
  6. Step 6: Final answer
    x = 396,589.88

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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.