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Finding the Fourth Proportional to 330,851.25, 496,276.88 and 81,533.25

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Solution

The fourth proportional to 330,851.25, 496,276.88 and 81,533.25 is: 122,299.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,851.25 : 496,276.88 = 81,533.25 : x
  2. Step 2: Convert to fraction form
    330,851.25/496,276.88 = 81,533.25/x
  3. Step 3: Cross multiply
    330,851.25x = 496,276.88 × 81,533.25
  4. Step 4: Simplify right side
    330,851.25x = 40,463,066,518.59
  5. Step 5: Solve for x
    x = 40,463,066,518.59/330,851.25
  6. Step 6: Final answer
    x = 122,299.88

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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.