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Finding the Fourth Proportional to 309,864.30, 464,796.45 and 291,201.90

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Solution

The fourth proportional to 309,864.30, 464,796.45 and 291,201.90 is: 436,802.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,864.30 : 464,796.45 = 291,201.90 : x
  2. Step 2: Convert to fraction form
    309,864.30/464,796.45 = 291,201.90/x
  3. Step 3: Cross multiply
    309,864.30x = 464,796.45 × 291,201.90
  4. Step 4: Simplify right side
    309,864.30x = 135,349,609,353.26
  5. Step 5: Solve for x
    x = 135,349,609,353.26/309,864.30
  6. Step 6: Final answer
    x = 436,802.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.