Finding the Fourth Proportional to 243,198,706.99, 335,638,175.84 and 138,792,493.39
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Solution
The fourth proportional to 243,198,706.99, 335,638,175.84 and 138,792,493.39 is: 191,547,314.86
Step by Step Solution
- Step 1: Write the proportion equation
243,198,706.99 : 335,638,175.84 = 138,792,493.39 : x - Step 2: Convert to fraction form
243,198,706.99/335,638,175.84 = 138,792,493.39/x - Step 3: Cross multiply
243,198,706.99x = 335,638,175.84 × 138,792,493.39 - Step 4: Simplify right side
243,198,706.99x = 46,584,059,301,704,848 - Step 5: Solve for x
x = 46,584,059,301,704,848/243,198,706.99 - Step 6: Final answer
x = 191,547,314.86
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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.