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Finding the Fourth Proportional to 395,172.84, 545,351.74 and 242,181.48

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Solution

The fourth proportional to 395,172.84, 545,351.74 and 242,181.48 is: 334,218.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,172.84 : 545,351.74 = 242,181.48 : x
  2. Step 2: Convert to fraction form
    395,172.84/545,351.74 = 242,181.48/x
  3. Step 3: Cross multiply
    395,172.84x = 545,351.74 × 242,181.48
  4. Step 4: Simplify right side
    395,172.84x = 132,074,090,908.32
  5. Step 5: Solve for x
    x = 132,074,090,908.32/395,172.84
  6. Step 6: Final answer
    x = 334,218.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.