Finding the Fourth Proportional to 388,871.82, 536,698.71 and 219,121.74
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Solution
The fourth proportional to 388,871.82, 536,698.71 and 219,121.74 is: 302,419.33
Step by Step Solution
- Step 1: Write the proportion equation
388,871.82 : 536,698.71 = 219,121.74 : x - Step 2: Convert to fraction form
388,871.82/536,698.71 = 219,121.74/x - Step 3: Cross multiply
388,871.82x = 536,698.71 × 219,121.74 - Step 4: Simplify right side
388,871.82x = 117,602,355,190.96 - Step 5: Solve for x
x = 117,602,355,190.96/388,871.82 - Step 6: Final answer
x = 302,419.33
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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.