Finding the Fourth Proportional to 373,912,959.88, 515,990,378.47 and 208,901,768.68
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Solution
The fourth proportional to 373,912,959.88, 515,990,378.47 and 208,901,768.68 is: 288,279,129.77
Step by Step Solution
- Step 1: Write the proportion equation
373,912,959.88 : 515,990,378.47 = 208,901,768.68 : x - Step 2: Convert to fraction form
373,912,959.88/515,990,378.47 = 208,901,768.68/x - Step 3: Cross multiply
373,912,959.88x = 515,990,378.47 × 208,901,768.68 - Step 4: Simplify right side
373,912,959.88x = 107,791,302,681,143,392 - Step 5: Solve for x
x = 107,791,302,681,143,392/373,912,959.88 - Step 6: Final answer
x = 288,279,129.77
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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.