Finding the Fourth Proportional to 255,678,726.21, 352,743,958.85 and 209,464,616.85
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Solution
The fourth proportional to 255,678,726.21, 352,743,958.85 and 209,464,616.85 is: 288,985,240.51
Step by Step Solution
- Step 1: Write the proportion equation
255,678,726.21 : 352,743,958.85 = 209,464,616.85 : x - Step 2: Convert to fraction form
255,678,726.21/352,743,958.85 = 209,464,616.85/x - Step 3: Cross multiply
255,678,726.21x = 352,743,958.85 × 209,464,616.85 - Step 4: Simplify right side
255,678,726.21x = 73,887,378,186,667,424 - Step 5: Solve for x
x = 73,887,378,186,667,424/255,678,726.21 - Step 6: Final answer
x = 288,985,240.51
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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.