Finding the Fourth Proportional to 259,206,373.62, 388,809,934.63 and 105,852,430.05
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Solution
The fourth proportional to 259,206,373.62, 388,809,934.63 and 105,852,430.05 is: 158,778,797.89
Step by Step Solution
- Step 1: Write the proportion equation
259,206,373.62 : 388,809,934.63 = 105,852,430.05 : x - Step 2: Convert to fraction form
259,206,373.62/388,809,934.63 = 105,852,430.05/x - Step 3: Cross multiply
259,206,373.62x = 388,809,934.63 × 105,852,430.05 - Step 4: Simplify right side
259,206,373.62x = 41,156,476,408,167,144 - Step 5: Solve for x
x = 41,156,476,408,167,144/259,206,373.62 - Step 6: Final answer
x = 158,778,797.89
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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.