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Finding the Fourth Proportional to 373,681.69, 515,677.90 and 212,536.54

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Solution

The fourth proportional to 373,681.69, 515,677.90 and 212,536.54 is: 293,298.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,681.69 : 515,677.90 = 212,536.54 : x
  2. Step 2: Convert to fraction form
    373,681.69/515,677.90 = 212,536.54/x
  3. Step 3: Cross multiply
    373,681.69x = 515,677.90 × 212,536.54
  4. Step 4: Simplify right side
    373,681.69x = 109,600,395,557.78
  5. Step 5: Solve for x
    x = 109,600,395,557.78/373,681.69
  6. Step 6: Final answer
    x = 293,298.81

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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.