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Finding the Fourth Proportional to 529,202.62, 730,304.67 and 287,487.01

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Solution

The fourth proportional to 529,202.62, 730,304.67 and 287,487.01 is: 396,734.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,202.62 : 730,304.67 = 287,487.01 : x
  2. Step 2: Convert to fraction form
    529,202.62/730,304.67 = 287,487.01/x
  3. Step 3: Cross multiply
    529,202.62x = 730,304.67 × 287,487.01
  4. Step 4: Simplify right side
    529,202.62x = 209,953,105,967.34
  5. Step 5: Solve for x
    x = 209,953,105,967.34/529,202.62
  6. Step 6: Final answer
    x = 396,734.82

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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.