Finding the Fourth Proportional to 358,067,651.48, 493,952,485.12 and 209,291,573.78
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Solution
The fourth proportional to 358,067,651.48, 493,952,485.12 and 209,291,573.78 is: 288,716,650.48
Step by Step Solution
- Step 1: Write the proportion equation
358,067,651.48 : 493,952,485.12 = 209,291,573.78 : x - Step 2: Convert to fraction form
358,067,651.48/493,952,485.12 = 209,291,573.78/x - Step 3: Cross multiply
358,067,651.48x = 493,952,485.12 × 209,291,573.78 - Step 4: Simplify right side
358,067,651.48x = 103,380,092,980,313,840 - Step 5: Solve for x
x = 103,380,092,980,313,840/358,067,651.48 - Step 6: Final answer
x = 288,716,650.48
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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.