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Finding the Fourth Proportional to 200,313.90, 300,033.45 and 121,290.30

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Solution

The fourth proportional to 200,313.90, 300,033.45 and 121,290.30 is: 181,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,313.90 : 300,033.45 = 121,290.30 : x
  2. Step 2: Convert to fraction form
    200,313.90/300,033.45 = 121,290.30/x
  3. Step 3: Cross multiply
    200,313.90x = 300,033.45 × 121,290.30
  4. Step 4: Simplify right side
    200,313.90x = 36,391,147,160.54
  5. Step 5: Solve for x
    x = 36,391,147,160.54/200,313.90
  6. Step 6: Final answer
    x = 181,670.60

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1.5x scale

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.