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Finding the Fourth Proportional to 265,136.08, 397,766.38 and 87,643.08

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Solution

The fourth proportional to 265,136.08, 397,766.38 and 87,643.08 is: 131,485.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,136.08 : 397,766.38 = 87,643.08 : x
  2. Step 2: Convert to fraction form
    265,136.08/397,766.38 = 87,643.08/x
  3. Step 3: Cross multiply
    265,136.08x = 397,766.38 × 87,643.08
  4. Step 4: Simplify right side
    265,136.08x = 34,861,470,663.65
  5. Step 5: Solve for x
    x = 34,861,470,663.65/265,136.08
  6. Step 6: Final answer
    x = 131,485.20

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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.