Finding the Fourth Proportional to 235,557.74, 325,070.64 and 128,128.43
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Solution
The fourth proportional to 235,557.74, 325,070.64 and 128,128.43 is: 176,817.75
Step by Step Solution
- Step 1: Write the proportion equation
235,557.74 : 325,070.64 = 128,128.43 : x - Step 2: Convert to fraction form
235,557.74/325,070.64 = 128,128.43/x - Step 3: Cross multiply
235,557.74x = 325,070.64 × 128,128.43 - Step 4: Simplify right side
235,557.74x = 41,650,789,116.94 - Step 5: Solve for x
x = 41,650,789,116.94/235,557.74 - Step 6: Final answer
x = 176,817.75
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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.