Finding the Fourth Proportional to 370,608,643.20, 511,438,368.80 and 205,596,212.80
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Solution
The fourth proportional to 370,608,643.20, 511,438,368.80 and 205,596,212.80 is: 283,721,908.91
Step by Step Solution
- Step 1: Write the proportion equation
370,608,643.20 : 511,438,368.80 = 205,596,212.80 : x - Step 2: Convert to fraction form
370,608,643.20/511,438,368.80 = 205,596,212.80/x - Step 3: Cross multiply
370,608,643.20x = 511,438,368.80 × 205,596,212.80 - Step 4: Simplify right side
370,608,643.20x = 105,149,791,705,889,696 - Step 5: Solve for x
x = 105,149,791,705,889,696/370,608,643.20 - Step 6: Final answer
x = 283,721,908.91
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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.