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Finding the Fourth Proportional to 399,735.30, 598,618.80 and 265,890.90

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Solution

The fourth proportional to 399,735.30, 598,618.80 and 265,890.90 is: 398,181.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,735.30 : 598,618.80 = 265,890.90 : x
  2. Step 2: Convert to fraction form
    399,735.30/598,618.80 = 265,890.90/x
  3. Step 3: Cross multiply
    399,735.30x = 598,618.80 × 265,890.90
  4. Step 4: Simplify right side
    399,735.30x = 159,167,291,488.92
  5. Step 5: Solve for x
    x = 159,167,291,488.92/399,735.30
  6. Step 6: Final answer
    x = 398,181.73

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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.