Finding the Fourth Proportional to 208,312.62, 287,476.74 and 127,784.58
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Solution
The fourth proportional to 208,312.62, 287,476.74 and 127,784.58 is: 176,345.99
Step by Step Solution
- Step 1: Write the proportion equation
208,312.62 : 287,476.74 = 127,784.58 : x - Step 2: Convert to fraction form
208,312.62/287,476.74 = 127,784.58/x - Step 3: Cross multiply
208,312.62x = 287,476.74 × 127,784.58 - Step 4: Simplify right side
208,312.62x = 36,735,094,480.67 - Step 5: Solve for x
x = 36,735,094,480.67/208,312.62 - Step 6: Final answer
x = 176,345.99
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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.