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Finding the Fourth Proportional to 549,375.72, 757,871.03 and 355,727.80

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Solution

The fourth proportional to 549,375.72, 757,871.03 and 355,727.80 is: 490,731.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,375.72 : 757,871.03 = 355,727.80 : x
  2. Step 2: Convert to fraction form
    549,375.72/757,871.03 = 355,727.80/x
  3. Step 3: Cross multiply
    549,375.72x = 757,871.03 × 355,727.80
  4. Step 4: Simplify right side
    549,375.72x = 269,595,796,022.29
  5. Step 5: Solve for x
    x = 269,595,796,022.29/549,375.72
  6. Step 6: Final answer
    x = 490,731.18

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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.