Finding the Fourth Proportional to 260,736,419.80, 391,104,629.70 and 139,804,067.80
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Solution
The fourth proportional to 260,736,419.80, 391,104,629.70 and 139,804,067.80 is: 209,706,101.70
Step by Step Solution
- Step 1: Write the proportion equation
260,736,419.80 : 391,104,629.70 = 139,804,067.80 : x - Step 2: Convert to fraction form
260,736,419.80/391,104,629.70 = 139,804,067.80/x - Step 3: Cross multiply
260,736,419.80x = 391,104,629.70 × 139,804,067.80 - Step 4: Simplify right side
260,736,419.80x = 54,678,018,167,472,696 - Step 5: Solve for x
x = 54,678,018,167,472,696/260,736,419.80 - Step 6: Final answer
x = 209,706,101.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.