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Finding the Fourth Proportional to 437,891.40, 657,128.70 and 201,112.20

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Solution

The fourth proportional to 437,891.40, 657,128.70 and 201,112.20 is: 301,802.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,891.40 : 657,128.70 = 201,112.20 : x
  2. Step 2: Convert to fraction form
    437,891.40/657,128.70 = 201,112.20/x
  3. Step 3: Cross multiply
    437,891.40x = 657,128.70 × 201,112.20
  4. Step 4: Simplify right side
    437,891.40x = 132,156,598,540.14
  5. Step 5: Solve for x
    x = 132,156,598,540.14/437,891.40
  6. Step 6: Final answer
    x = 301,802.22

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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.