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Finding the Fourth Proportional to 373,431.16, 515,328.78 and 203,655.16

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Solution

The fourth proportional to 373,431.16, 515,328.78 and 203,655.16 is: 281,040.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,431.16 : 515,328.78 = 203,655.16 : x
  2. Step 2: Convert to fraction form
    373,431.16/515,328.78 = 203,655.16/x
  3. Step 3: Cross multiply
    373,431.16x = 515,328.78 × 203,655.16
  4. Step 4: Simplify right side
    373,431.16x = 104,949,365,143.51
  5. Step 5: Solve for x
    x = 104,949,365,143.51/373,431.16
  6. Step 6: Final answer
    x = 281,040.73

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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.