Finding the Fourth Proportional to 261,455,072.87, 360,796,361.99 and 149,865,915.20
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Solution
The fourth proportional to 261,455,072.87, 360,796,361.99 and 149,865,915.20 is: 206,808,291.74
Step by Step Solution
- Step 1: Write the proportion equation
261,455,072.87 : 360,796,361.99 = 149,865,915.20 : x - Step 2: Convert to fraction form
261,455,072.87/360,796,361.99 = 149,865,915.20/x - Step 3: Cross multiply
261,455,072.87x = 360,796,361.99 × 149,865,915.20 - Step 4: Simplify right side
261,455,072.87x = 54,071,076,987,908,528 - Step 5: Solve for x
x = 54,071,076,987,908,528/261,455,072.87 - Step 6: Final answer
x = 206,808,291.74
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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.