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Finding the Fourth Proportional to 190,209.60, 262,450.80 and 105,310.80

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Solution

The fourth proportional to 190,209.60, 262,450.80 and 105,310.80 is: 145,307.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,209.60 : 262,450.80 = 105,310.80 : x
  2. Step 2: Convert to fraction form
    190,209.60/262,450.80 = 105,310.80/x
  3. Step 3: Cross multiply
    190,209.60x = 262,450.80 × 105,310.80
  4. Step 4: Simplify right side
    190,209.60x = 27,638,903,708.64
  5. Step 5: Solve for x
    x = 27,638,903,708.64/190,209.60
  6. Step 6: Final answer
    x = 145,307.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.