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Finding the Fourth Proportional to 200,906.20, 301,359.30 and 130,047.40

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Solution

The fourth proportional to 200,906.20, 301,359.30 and 130,047.40 is: 195,071.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,906.20 : 301,359.30 = 130,047.40 : x
  2. Step 2: Convert to fraction form
    200,906.20/301,359.30 = 130,047.40/x
  3. Step 3: Cross multiply
    200,906.20x = 301,359.30 × 130,047.40
  4. Step 4: Simplify right side
    200,906.20x = 39,190,993,430.82
  5. Step 5: Solve for x
    x = 39,190,993,430.82/200,906.20
  6. Step 6: Final answer
    x = 195,071.10

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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.