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Finding the Fourth Proportional to 383,802.72, 529,634.76 and 211,727.52

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Solution

The fourth proportional to 383,802.72, 529,634.76 and 211,727.52 is: 292,176.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,802.72 : 529,634.76 = 211,727.52 : x
  2. Step 2: Convert to fraction form
    383,802.72/529,634.76 = 211,727.52/x
  3. Step 3: Cross multiply
    383,802.72x = 529,634.76 × 211,727.52
  4. Step 4: Simplify right side
    383,802.72x = 112,138,254,240.60
  5. Step 5: Solve for x
    x = 112,138,254,240.60/383,802.72
  6. Step 6: Final answer
    x = 292,176.81

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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.