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Finding the Fourth Proportional to 395,450.51, 545,731.70 and 242,573

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Solution

The fourth proportional to 395,450.51, 545,731.70 and 242,573 is: 334,756.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,450.51 : 545,731.70 = 242,573 : x
  2. Step 2: Convert to fraction form
    395,450.51/545,731.70 = 242,573/x
  3. Step 3: Cross multiply
    395,450.51x = 545,731.70 × 242,573
  4. Step 4: Simplify right side
    395,450.51x = 132,379,775,664.10
  5. Step 5: Solve for x
    x = 132,379,775,664.10/395,450.51
  6. Step 6: Final answer
    x = 334,756.87

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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.