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Finding the Fourth Proportional to 373,991, 516,144.93 and 223,088

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Solution

The fourth proportional to 373,991, 516,144.93 and 223,088 is: 307,883.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,991 : 516,144.93 = 223,088 : x
  2. Step 2: Convert to fraction form
    373,991/516,144.93 = 223,088/x
  3. Step 3: Cross multiply
    373,991x = 516,144.93 × 223,088
  4. Step 4: Simplify right side
    373,991x = 115,145,740,143.84
  5. Step 5: Solve for x
    x = 115,145,740,143.84/373,991
  6. Step 6: Final answer
    x = 307,883.72

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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.