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Finding the Fourth Proportional to 190,478.31, 285,673.74 and 113,563.07

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Solution

The fourth proportional to 190,478.31, 285,673.74 and 113,563.07 is: 170,318.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,478.31 : 285,673.74 = 113,563.07 : x
  2. Step 2: Convert to fraction form
    190,478.31/285,673.74 = 113,563.07/x
  3. Step 3: Cross multiply
    190,478.31x = 285,673.74 × 113,563.07
  4. Step 4: Simplify right side
    190,478.31x = 32,441,984,936.60
  5. Step 5: Solve for x
    x = 32,441,984,936.60/190,478.31
  6. Step 6: Final answer
    x = 170,318.53

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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.