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Finding the Fourth Proportional to 478,735.31, 717,618.57 and 310,362.62

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Solution

The fourth proportional to 478,735.31, 717,618.57 and 310,362.62 is: 465,229.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,735.31 : 717,618.57 = 310,362.62 : x
  2. Step 2: Convert to fraction form
    478,735.31/717,618.57 = 310,362.62/x
  3. Step 3: Cross multiply
    478,735.31x = 717,618.57 × 310,362.62
  4. Step 4: Simplify right side
    478,735.31x = 222,721,980,576.30
  5. Step 5: Solve for x
    x = 222,721,980,576.30/478,735.31
  6. Step 6: Final answer
    x = 465,229.90

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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.