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Finding the Fourth Proportional to 548,039.42, 756,242.46 and 306,316.47

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Solution

The fourth proportional to 548,039.42, 756,242.46 and 306,316.47 is: 422,687.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,039.42 : 756,242.46 = 306,316.47 : x
  2. Step 2: Convert to fraction form
    548,039.42/756,242.46 = 306,316.47/x
  3. Step 3: Cross multiply
    548,039.42x = 756,242.46 × 306,316.47
  4. Step 4: Simplify right side
    548,039.42x = 231,649,520,811.32
  5. Step 5: Solve for x
    x = 231,649,520,811.32/548,039.42
  6. Step 6: Final answer
    x = 422,687.70

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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.