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Finding the Fourth Proportional to 402,791.88, 604,148.58 and 122,311.56

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Solution

The fourth proportional to 402,791.88, 604,148.58 and 122,311.56 is: 183,455.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,791.88 : 604,148.58 = 122,311.56 : x
  2. Step 2: Convert to fraction form
    402,791.88/604,148.58 = 122,311.56/x
  3. Step 3: Cross multiply
    402,791.88x = 604,148.58 × 122,311.56
  4. Step 4: Simplify right side
    402,791.88x = 73,894,355,291.58
  5. Step 5: Solve for x
    x = 73,894,355,291.58/402,791.88
  6. Step 6: Final answer
    x = 183,455.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.