Finding the Fourth Proportional to 378,454,795.63, 522,267,722.06 and 208,909,136.48
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Solution
The fourth proportional to 378,454,795.63, 522,267,722.06 and 208,909,136.48 is: 288,294,665.79
Step by Step Solution
- Step 1: Write the proportion equation
378,454,795.63 : 522,267,722.06 = 208,909,136.48 : x - Step 2: Convert to fraction form
378,454,795.63/522,267,722.06 = 208,909,136.48/x - Step 3: Cross multiply
378,454,795.63x = 522,267,722.06 × 208,909,136.48 - Step 4: Simplify right side
378,454,795.63x = 109,106,498,823,275,360 - Step 5: Solve for x
x = 109,106,498,823,275,360/378,454,795.63 - Step 6: Final answer
x = 288,294,665.79
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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.