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Finding the Fourth Proportional to 438,560.06, 657,310.28 and 213,583.37

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Solution

The fourth proportional to 438,560.06, 657,310.28 and 213,583.37 is: 320,117.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,560.06 : 657,310.28 = 213,583.37 : x
  2. Step 2: Convert to fraction form
    438,560.06/657,310.28 = 213,583.37/x
  3. Step 3: Cross multiply
    438,560.06x = 657,310.28 × 213,583.37
  4. Step 4: Simplify right side
    438,560.06x = 140,390,540,383.58
  5. Step 5: Solve for x
    x = 140,390,540,383.58/438,560.06
  6. Step 6: Final answer
    x = 320,117.03

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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.