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Finding the Fourth Proportional to 529,094.62, 730,155.94 and 287,381.92

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Solution

The fourth proportional to 529,094.62, 730,155.94 and 287,381.92 is: 396,589.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,094.62 : 730,155.94 = 287,381.92 : x
  2. Step 2: Convert to fraction form
    529,094.62/730,155.94 = 287,381.92/x
  3. Step 3: Cross multiply
    529,094.62x = 730,155.94 × 287,381.92
  4. Step 4: Simplify right side
    529,094.62x = 209,833,610,848.92
  5. Step 5: Solve for x
    x = 209,833,610,848.92/529,094.62
  6. Step 6: Final answer
    x = 396,589.95

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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.