Finding the Fourth Proportional to 252,153.88, 347,962.16 and 137,430.07
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Solution
The fourth proportional to 252,153.88, 347,962.16 and 137,430.07 is: 189,647.94
Step by Step Solution
- Step 1: Write the proportion equation
252,153.88 : 347,962.16 = 137,430.07 : x - Step 2: Convert to fraction form
252,153.88/347,962.16 = 137,430.07/x - Step 3: Cross multiply
252,153.88x = 347,962.16 × 137,430.07 - Step 4: Simplify right side
252,153.88x = 47,820,463,479.82 - Step 5: Solve for x
x = 47,820,463,479.82/252,153.88 - Step 6: Final answer
x = 189,647.94
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1.5x scale
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.