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Finding the Fourth Proportional to 322,762.72, 445,303.20 and 230,804.32

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Solution

The fourth proportional to 322,762.72, 445,303.20 and 230,804.32 is: 318,431.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,762.72 : 445,303.20 = 230,804.32 : x
  2. Step 2: Convert to fraction form
    322,762.72/445,303.20 = 230,804.32/x
  3. Step 3: Cross multiply
    322,762.72x = 445,303.20 × 230,804.32
  4. Step 4: Simplify right side
    322,762.72x = 102,777,902,269.82
  5. Step 5: Solve for x
    x = 102,777,902,269.82/322,762.72
  6. Step 6: Final answer
    x = 318,431.76

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1.5x scale

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.