Finding the Fourth Proportional to 239,565,838.28, 330,601,852.80 and 129,557,551.28
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Solution
The fourth proportional to 239,565,838.28, 330,601,852.80 and 129,557,551.28 is: 178,789,959.39
Step by Step Solution
- Step 1: Write the proportion equation
239,565,838.28 : 330,601,852.80 = 129,557,551.28 : x - Step 2: Convert to fraction form
239,565,838.28/330,601,852.80 = 129,557,551.28/x - Step 3: Cross multiply
239,565,838.28x = 330,601,852.80 × 129,557,551.28 - Step 4: Simplify right side
239,565,838.28x = 42,831,966,497,399,016 - Step 5: Solve for x
x = 42,831,966,497,399,016/239,565,838.28 - Step 6: Final answer
x = 178,789,959.39
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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.