Finding the Fourth Proportional to 387,994,630.64, 535,352,661.36 and 222,950,313.68
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Solution
The fourth proportional to 387,994,630.64, 535,352,661.36 and 222,950,313.68 is: 307,625,503.95
Step by Step Solution
- Step 1: Write the proportion equation
387,994,630.64 : 535,352,661.36 = 222,950,313.68 : x - Step 2: Convert to fraction form
387,994,630.64/535,352,661.36 = 222,950,313.68/x - Step 3: Cross multiply
387,994,630.64x = 535,352,661.36 × 222,950,313.68 - Step 4: Simplify right side
387,994,630.64x = 119,357,043,779,634,816 - Step 5: Solve for x
x = 119,357,043,779,634,816/387,994,630.64 - Step 6: Final answer
x = 307,625,503.95
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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.