Home / 492,128.40-738,192.60-305,245.20

Finding the Fourth Proportional to 492,128.40, 738,192.60 and 305,245.20

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Solution

The fourth proportional to 492,128.40, 738,192.60 and 305,245.20 is: 457,867.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,128.40 : 738,192.60 = 305,245.20 : x
  2. Step 2: Convert to fraction form
    492,128.40/738,192.60 = 305,245.20/x
  3. Step 3: Cross multiply
    492,128.40x = 738,192.60 × 305,245.20
  4. Step 4: Simplify right side
    492,128.40x = 225,329,747,825.52
  5. Step 5: Solve for x
    x = 225,329,747,825.52/492,128.40
  6. Step 6: Final answer
    x = 457,867.80

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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.