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Finding the Fourth Proportional to 404,126.80, 606,190.20 and 123,643.60

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Solution

The fourth proportional to 404,126.80, 606,190.20 and 123,643.60 is: 185,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,126.80 : 606,190.20 = 123,643.60 : x
  2. Step 2: Convert to fraction form
    404,126.80/606,190.20 = 123,643.60/x
  3. Step 3: Cross multiply
    404,126.80x = 606,190.20 × 123,643.60
  4. Step 4: Simplify right side
    404,126.80x = 74,951,538,612.72
  5. Step 5: Solve for x
    x = 74,951,538,612.72/404,126.80
  6. Step 6: Final answer
    x = 185,465.40

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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.