Finding the Fourth Proportional to 378,540,885.93, 522,387,145.35 and 208,995,451.62
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Solution
The fourth proportional to 378,540,885.93, 522,387,145.35 and 208,995,451.62 is: 288,414,122.28
Step by Step Solution
- Step 1: Write the proportion equation
378,540,885.93 : 522,387,145.35 = 208,995,451.62 : x - Step 2: Convert to fraction form
378,540,885.93/522,387,145.35 = 208,995,451.62/x - Step 3: Cross multiply
378,540,885.93x = 522,387,145.35 × 208,995,451.62 - Step 4: Simplify right side
378,540,885.93x = 109,176,537,362,905,840 - Step 5: Solve for x
x = 109,176,537,362,905,840/378,540,885.93 - Step 6: Final answer
x = 288,414,122.28
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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.