Finding the Fourth Proportional to 398,768,905.44, 550,373,122.08 and 237,843,203.76
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Solution
The fourth proportional to 398,768,905.44, 550,373,122.08 and 237,843,203.76 is: 328,266,584.56
Step by Step Solution
- Step 1: Write the proportion equation
398,768,905.44 : 550,373,122.08 = 237,843,203.76 : x - Step 2: Convert to fraction form
398,768,905.44/550,373,122.08 = 237,843,203.76/x - Step 3: Cross multiply
398,768,905.44x = 550,373,122.08 × 237,843,203.76 - Step 4: Simplify right side
398,768,905.44x = 130,902,506,618,900,800 - Step 5: Solve for x
x = 130,902,506,618,900,800/398,768,905.44 - Step 6: Final answer
x = 328,266,584.56
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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.