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Finding the Fourth Proportional to 355,583.28, 490,473.72 and 228,056.88

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Solution

The fourth proportional to 355,583.28, 490,473.72 and 228,056.88 is: 314,570.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,583.28 : 490,473.72 = 228,056.88 : x
  2. Step 2: Convert to fraction form
    355,583.28/490,473.72 = 228,056.88/x
  3. Step 3: Cross multiply
    355,583.28x = 490,473.72 × 228,056.88
  4. Step 4: Simplify right side
    355,583.28x = 111,855,906,305.19
  5. Step 5: Solve for x
    x = 111,855,906,305.19/355,583.28
  6. Step 6: Final answer
    x = 314,570.21

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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.