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Finding the Fourth Proportional to 373,564.71, 515,516.86 and 212,419.77

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Solution

The fourth proportional to 373,564.71, 515,516.86 and 212,419.77 is: 293,137.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,564.71 : 515,516.86 = 212,419.77 : x
  2. Step 2: Convert to fraction form
    373,564.71/515,516.86 = 212,419.77/x
  3. Step 3: Cross multiply
    373,564.71x = 515,516.86 × 212,419.77
  4. Step 4: Simplify right side
    373,564.71x = 109,505,972,301.27
  5. Step 5: Solve for x
    x = 109,505,972,301.27/373,564.71
  6. Step 6: Final answer
    x = 293,137.89

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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.