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Finding the Fourth Proportional to 373,679.19, 515,678.70 and 203,913.32

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Solution

The fourth proportional to 373,679.19, 515,678.70 and 203,913.32 is: 281,401.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,679.19 : 515,678.70 = 203,913.32 : x
  2. Step 2: Convert to fraction form
    373,679.19/515,678.70 = 203,913.32/x
  3. Step 3: Cross multiply
    373,679.19x = 515,678.70 × 203,913.32
  4. Step 4: Simplify right side
    373,679.19x = 105,153,753,956.57
  5. Step 5: Solve for x
    x = 105,153,753,956.57/373,679.19
  6. Step 6: Final answer
    x = 281,401.15

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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.