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Finding the Fourth Proportional to 402,768.45, 603,775.35 and 136,342.44

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Solution

The fourth proportional to 402,768.45, 603,775.35 and 136,342.44 is: 204,385.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,768.45 : 603,775.35 = 136,342.44 : x
  2. Step 2: Convert to fraction form
    402,768.45/603,775.35 = 136,342.44/x
  3. Step 3: Cross multiply
    402,768.45x = 603,775.35 × 136,342.44
  4. Step 4: Simplify right side
    402,768.45x = 82,320,204,430.85
  5. Step 5: Solve for x
    x = 82,320,204,430.85/402,768.45
  6. Step 6: Final answer
    x = 204,385.93

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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.