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Finding the Fourth Proportional to 399,100.65, 550,764 and 235,762.53

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Solution

The fourth proportional to 399,100.65, 550,764 and 235,762.53 is: 325,355.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,100.65 : 550,764 = 235,762.53 : x
  2. Step 2: Convert to fraction form
    399,100.65/550,764 = 235,762.53/x
  3. Step 3: Cross multiply
    399,100.65x = 550,764 × 235,762.53
  4. Step 4: Simplify right side
    399,100.65x = 129,849,514,072.92
  5. Step 5: Solve for x
    x = 129,849,514,072.92/399,100.65
  6. Step 6: Final answer
    x = 325,355.31

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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.