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Finding the Fourth Proportional to 421,662.72, 581,892.48 and 230,672.64

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Solution

The fourth proportional to 421,662.72, 581,892.48 and 230,672.64 is: 318,327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,662.72 : 581,892.48 = 230,672.64 : x
  2. Step 2: Convert to fraction form
    421,662.72/581,892.48 = 230,672.64/x
  3. Step 3: Cross multiply
    421,662.72x = 581,892.48 × 230,672.64
  4. Step 4: Simplify right side
    421,662.72x = 134,226,674,557.75
  5. Step 5: Solve for x
    x = 134,226,674,557.75/421,662.72
  6. Step 6: Final answer
    x = 318,327.11

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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.