Finding the Fourth Proportional to 245,622,756.24, 338,919,394.05 and 145,137,210.75
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Solution
The fourth proportional to 245,622,756.24, 338,919,394.05 and 145,137,210.75 is: 200,265,709.39
Step by Step Solution
- Step 1: Write the proportion equation
245,622,756.24 : 338,919,394.05 = 145,137,210.75 : x - Step 2: Convert to fraction form
245,622,756.24/338,919,394.05 = 145,137,210.75/x - Step 3: Cross multiply
245,622,756.24x = 338,919,394.05 × 145,137,210.75 - Step 4: Simplify right side
245,622,756.24x = 49,189,815,521,497,144 - Step 5: Solve for x
x = 49,189,815,521,497,144/245,622,756.24 - Step 6: Final answer
x = 200,265,709.39
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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.