Home / 326,869.20-490,376.70-127,171.80

Finding the Fourth Proportional to 326,869.20, 490,376.70 and 127,171.80

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Solution

The fourth proportional to 326,869.20, 490,376.70 and 127,171.80 is: 190,786.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,869.20 : 490,376.70 = 127,171.80 : x
  2. Step 2: Convert to fraction form
    326,869.20/490,376.70 = 127,171.80/x
  3. Step 3: Cross multiply
    326,869.20x = 490,376.70 × 127,171.80
  4. Step 4: Simplify right side
    326,869.20x = 62,362,087,617.06
  5. Step 5: Solve for x
    x = 62,362,087,617.06/326,869.20
  6. Step 6: Final answer
    x = 190,786.06

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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.