Finding the Fourth Proportional to 216,855,361.12, 325,412,290.53 and 78,691,746.62
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Solution
The fourth proportional to 216,855,361.12, 325,412,290.53 and 78,691,746.62 is: 118,084,521.32
Step by Step Solution
- Step 1: Write the proportion equation
216,855,361.12 : 325,412,290.53 = 78,691,746.62 : x - Step 2: Convert to fraction form
216,855,361.12/325,412,290.53 = 78,691,746.62/x - Step 3: Cross multiply
216,855,361.12x = 325,412,290.53 × 78,691,746.62 - Step 4: Simplify right side
216,855,361.12x = 25,607,261,513,420,584 - Step 5: Solve for x
x = 25,607,261,513,420,584/216,855,361.12 - Step 6: Final answer
x = 118,084,521.32
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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.