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Finding the Fourth Proportional to 589,783.80, 885,021.30 and 215,844.60

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Solution

The fourth proportional to 589,783.80, 885,021.30 and 215,844.60 is: 323,893.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,783.80 : 885,021.30 = 215,844.60 : x
  2. Step 2: Convert to fraction form
    589,783.80/885,021.30 = 215,844.60/x
  3. Step 3: Cross multiply
    589,783.80x = 885,021.30 × 215,844.60
  4. Step 4: Simplify right side
    589,783.80x = 191,027,068,489.98
  5. Step 5: Solve for x
    x = 191,027,068,489.98/589,783.80
  6. Step 6: Final answer
    x = 323,893.38

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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.