Finding the Fourth Proportional to 221,456,220.62, 305,618,869.70 and 127,370,393.79
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Solution
The fourth proportional to 221,456,220.62, 305,618,869.70 and 127,370,393.79 is: 175,776,483.83
Step by Step Solution
- Step 1: Write the proportion equation
221,456,220.62 : 305,618,869.70 = 127,370,393.79 : x - Step 2: Convert to fraction form
221,456,220.62/305,618,869.70 = 127,370,393.79/x - Step 3: Cross multiply
221,456,220.62x = 305,618,869.70 × 127,370,393.79 - Step 4: Simplify right side
221,456,220.62x = 38,926,795,782,706,848 - Step 5: Solve for x
x = 38,926,795,782,706,848/221,456,220.62 - Step 6: Final answer
x = 175,776,483.83
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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.