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Finding the Fourth Proportional to 355,907.48, 491,152.36 and 194,762.56

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Solution

The fourth proportional to 355,907.48, 491,152.36 and 194,762.56 is: 268,772.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,907.48 : 491,152.36 = 194,762.56 : x
  2. Step 2: Convert to fraction form
    355,907.48/491,152.36 = 194,762.56/x
  3. Step 3: Cross multiply
    355,907.48x = 491,152.36 × 194,762.56
  4. Step 4: Simplify right side
    355,907.48x = 95,658,090,983.64
  5. Step 5: Solve for x
    x = 95,658,090,983.64/355,907.48
  6. Step 6: Final answer
    x = 268,772.35

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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.