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Finding the Fourth Proportional to 373,478.07, 515,399.73 and 203,712.20

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Solution

The fourth proportional to 373,478.07, 515,399.73 and 203,712.20 is: 281,122.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,478.07 : 515,399.73 = 203,712.20 : x
  2. Step 2: Convert to fraction form
    373,478.07/515,399.73 = 203,712.20/x
  3. Step 3: Cross multiply
    373,478.07x = 515,399.73 × 203,712.20
  4. Step 4: Simplify right side
    373,478.07x = 104,993,210,300.71
  5. Step 5: Solve for x
    x = 104,993,210,300.71/373,478.07
  6. Step 6: Final answer
    x = 281,122.83

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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.