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Finding the Fourth Proportional to 561,358.32, 842,247 and 336,879.78

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Solution

The fourth proportional to 561,358.32, 842,247 and 336,879.78 is: 505,445.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,358.32 : 842,247 = 336,879.78 : x
  2. Step 2: Convert to fraction form
    561,358.32/842,247 = 336,879.78/x
  3. Step 3: Cross multiply
    561,358.32x = 842,247 × 336,879.78
  4. Step 4: Simplify right side
    561,358.32x = 283,735,984,065.66
  5. Step 5: Solve for x
    x = 283,735,984,065.66/561,358.32
  6. Step 6: Final answer
    x = 505,445.41

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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.