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Finding the Fourth Proportional to 369,991.50, 554,987.25 and 120,673.50

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Solution

The fourth proportional to 369,991.50, 554,987.25 and 120,673.50 is: 181,010.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,991.50 : 554,987.25 = 120,673.50 : x
  2. Step 2: Convert to fraction form
    369,991.50/554,987.25 = 120,673.50/x
  3. Step 3: Cross multiply
    369,991.50x = 554,987.25 × 120,673.50
  4. Step 4: Simplify right side
    369,991.50x = 66,972,253,912.88
  5. Step 5: Solve for x
    x = 66,972,253,912.88/369,991.50
  6. Step 6: Final answer
    x = 181,010.25

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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.