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Finding the Fourth Proportional to 400,964, 553,330.32 and 222,116

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Solution

The fourth proportional to 400,964, 553,330.32 and 222,116 is: 306,520.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,964 : 553,330.32 = 222,116 : x
  2. Step 2: Convert to fraction form
    400,964/553,330.32 = 222,116/x
  3. Step 3: Cross multiply
    400,964x = 553,330.32 × 222,116
  4. Step 4: Simplify right side
    400,964x = 122,903,517,357.12
  5. Step 5: Solve for x
    x = 122,903,517,357.12/400,964
  6. Step 6: Final answer
    x = 306,520.08

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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.