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Finding the Fourth Proportional to 399,898.44, 599,726.54 and 210,256.62

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Solution

The fourth proportional to 399,898.44, 599,726.54 and 210,256.62 is: 315,321.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,898.44 : 599,726.54 = 210,256.62 : x
  2. Step 2: Convert to fraction form
    399,898.44/599,726.54 = 210,256.62/x
  3. Step 3: Cross multiply
    399,898.44x = 599,726.54 × 210,256.62
  4. Step 4: Simplify right side
    399,898.44x = 126,096,475,224.70
  5. Step 5: Solve for x
    x = 126,096,475,224.70/399,898.44
  6. Step 6: Final answer
    x = 315,321.25

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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.