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Finding the Fourth Proportional to 589,640.80, 884,266.80 and 215,615.20

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Solution

The fourth proportional to 589,640.80, 884,266.80 and 215,615.20 is: 323,351.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,640.80 : 884,266.80 = 215,615.20 : x
  2. Step 2: Convert to fraction form
    589,640.80/884,266.80 = 215,615.20/x
  3. Step 3: Cross multiply
    589,640.80x = 884,266.80 × 215,615.20
  4. Step 4: Simplify right side
    589,640.80x = 190,661,362,935.36
  5. Step 5: Solve for x
    x = 190,661,362,935.36/589,640.80
  6. Step 6: Final answer
    x = 323,351.71

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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.