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Finding the Fourth Proportional to 190,395.84, 285,379.92 and 90,474.24

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Solution

The fourth proportional to 190,395.84, 285,379.92 and 90,474.24 is: 135,609.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,395.84 : 285,379.92 = 90,474.24 : x
  2. Step 2: Convert to fraction form
    190,395.84/285,379.92 = 90,474.24/x
  3. Step 3: Cross multiply
    190,395.84x = 285,379.92 × 90,474.24
  4. Step 4: Simplify right side
    190,395.84x = 25,819,531,373.26
  5. Step 5: Solve for x
    x = 25,819,531,373.26/190,395.84
  6. Step 6: Final answer
    x = 135,609.75

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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.