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Finding the Fourth Proportional to 290,982.71, 436,104 and 130,887.50

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Solution

The fourth proportional to 290,982.71, 436,104 and 130,887.50 is: 196,164.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,982.71 : 436,104 = 130,887.50 : x
  2. Step 2: Convert to fraction form
    290,982.71/436,104 = 130,887.50/x
  3. Step 3: Cross multiply
    290,982.71x = 436,104 × 130,887.50
  4. Step 4: Simplify right side
    290,982.71x = 57,080,560,119.48
  5. Step 5: Solve for x
    x = 57,080,560,119.48/290,982.71
  6. Step 6: Final answer
    x = 196,164.78

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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.