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Finding the Fourth Proportional to 355,907.88, 491,131.80 and 194,730.84

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Solution

The fourth proportional to 355,907.88, 491,131.80 and 194,730.84 is: 268,717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,907.88 : 491,131.80 = 194,730.84 : x
  2. Step 2: Convert to fraction form
    355,907.88/491,131.80 = 194,730.84/x
  3. Step 3: Cross multiply
    355,907.88x = 491,131.80 × 194,730.84
  4. Step 4: Simplify right side
    355,907.88x = 95,638,507,964.71
  5. Step 5: Solve for x
    x = 95,638,507,964.71/355,907.88
  6. Step 6: Final answer
    x = 268,717.03

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1.5x scale

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.