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Finding the Fourth Proportional to 373,189.64, 515,001.74 and 203,423.76

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Solution

The fourth proportional to 373,189.64, 515,001.74 and 203,423.76 is: 280,724.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,189.64 : 515,001.74 = 203,423.76 : x
  2. Step 2: Convert to fraction form
    373,189.64/515,001.74 = 203,423.76/x
  3. Step 3: Cross multiply
    373,189.64x = 515,001.74 × 203,423.76
  4. Step 4: Simplify right side
    373,189.64x = 104,763,590,357.34
  5. Step 5: Solve for x
    x = 104,763,590,357.34/373,189.64
  6. Step 6: Final answer
    x = 280,724.81

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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.