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Finding the Fourth Proportional to 438,004.56, 656,906.40 and 122,483.64

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Solution

The fourth proportional to 438,004.56, 656,906.40 and 122,483.64 is: 183,697.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,004.56 : 656,906.40 = 122,483.64 : x
  2. Step 2: Convert to fraction form
    438,004.56/656,906.40 = 122,483.64/x
  3. Step 3: Cross multiply
    438,004.56x = 656,906.40 × 122,483.64
  4. Step 4: Simplify right side
    438,004.56x = 80,460,287,011.30
  5. Step 5: Solve for x
    x = 80,460,287,011.30/438,004.56
  6. Step 6: Final answer
    x = 183,697.37

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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.