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Finding the Fourth Proportional to 373,492.13, 515,420.77 and 203,729.90

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Solution

The fourth proportional to 373,492.13, 515,420.77 and 203,729.90 is: 281,148.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,492.13 : 515,420.77 = 203,729.90 : x
  2. Step 2: Convert to fraction form
    373,492.13/515,420.77 = 203,729.90/x
  3. Step 3: Cross multiply
    373,492.13x = 515,420.77 × 203,729.90
  4. Step 4: Simplify right side
    373,492.13x = 105,006,622,124.83
  5. Step 5: Solve for x
    x = 105,006,622,124.83/373,492.13
  6. Step 6: Final answer
    x = 281,148.15

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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.