Finding the Fourth Proportional to 221,987.16, 306,342.88 and 141,397.44
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Solution
The fourth proportional to 221,987.16, 306,342.88 and 141,397.44 is: 195,128.85
Step by Step Solution
- Step 1: Write the proportion equation
221,987.16 : 306,342.88 = 141,397.44 : x - Step 2: Convert to fraction form
221,987.16/306,342.88 = 141,397.44/x - Step 3: Cross multiply
221,987.16x = 306,342.88 × 141,397.44 - Step 4: Simplify right side
221,987.16x = 43,316,098,994.23 - Step 5: Solve for x
x = 43,316,098,994.23/221,987.16 - Step 6: Final answer
x = 195,128.85
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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.