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Finding the Fourth Proportional to 318,161.61, 439,064.15 and 174,930.66

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Solution

The fourth proportional to 318,161.61, 439,064.15 and 174,930.66 is: 241,404.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,161.61 : 439,064.15 = 174,930.66 : x
  2. Step 2: Convert to fraction form
    318,161.61/439,064.15 = 174,930.66/x
  3. Step 3: Cross multiply
    318,161.61x = 439,064.15 × 174,930.66
  4. Step 4: Simplify right side
    318,161.61x = 76,805,780,667.19
  5. Step 5: Solve for x
    x = 76,805,780,667.19/318,161.61
  6. Step 6: Final answer
    x = 241,404.93

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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.