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Finding the Fourth Proportional to 490,131.60, 734,905.80 and 253,935.60

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Solution

The fourth proportional to 490,131.60, 734,905.80 and 253,935.60 is: 380,752.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,131.60 : 734,905.80 = 253,935.60 : x
  2. Step 2: Convert to fraction form
    490,131.60/734,905.80 = 253,935.60/x
  3. Step 3: Cross multiply
    490,131.60x = 734,905.80 × 253,935.60
  4. Step 4: Simplify right side
    490,131.60x = 186,618,745,266.48
  5. Step 5: Solve for x
    x = 186,618,745,266.48/490,131.60
  6. Step 6: Final answer
    x = 380,752.32

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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.