Finding the Fourth Proportional to 280,897.98, 387,639.26 and 153,573.62
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Solution
The fourth proportional to 280,897.98, 387,639.26 and 153,573.62 is: 211,931.62
Step by Step Solution
- Step 1: Write the proportion equation
280,897.98 : 387,639.26 = 153,573.62 : x - Step 2: Convert to fraction form
280,897.98/387,639.26 = 153,573.62/x - Step 3: Cross multiply
280,897.98x = 387,639.26 × 153,573.62 - Step 4: Simplify right side
280,897.98x = 59,531,164,412.32 - Step 5: Solve for x
x = 59,531,164,412.32/280,897.98 - Step 6: Final answer
x = 211,931.62
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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.