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Finding the Fourth Proportional to 328,053.80, 492,080.70 and 248,738.60

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Solution

The fourth proportional to 328,053.80, 492,080.70 and 248,738.60 is: 373,107.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,053.80 : 492,080.70 = 248,738.60 : x
  2. Step 2: Convert to fraction form
    328,053.80/492,080.70 = 248,738.60/x
  3. Step 3: Cross multiply
    328,053.80x = 492,080.70 × 248,738.60
  4. Step 4: Simplify right side
    328,053.80x = 122,399,464,405.02
  5. Step 5: Solve for x
    x = 122,399,464,405.02/328,053.80
  6. Step 6: Final answer
    x = 373,107.90

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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.