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Finding the Fourth Proportional to 190,867.20, 286,300.80 and 179,980.80

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Solution

The fourth proportional to 190,867.20, 286,300.80 and 179,980.80 is: 269,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,867.20 : 286,300.80 = 179,980.80 : x
  2. Step 2: Convert to fraction form
    190,867.20/286,300.80 = 179,980.80/x
  3. Step 3: Cross multiply
    190,867.20x = 286,300.80 × 179,980.80
  4. Step 4: Simplify right side
    190,867.20x = 51,528,647,024.64
  5. Step 5: Solve for x
    x = 51,528,647,024.64/190,867.20
  6. Step 6: Final answer
    x = 269,971.20

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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.