Finding the Fourth Proportional to 315,646.30, 435,478.71 and 186,557.68
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Solution
The fourth proportional to 315,646.30, 435,478.71 and 186,557.68 is: 257,382.70
Step by Step Solution
- Step 1: Write the proportion equation
315,646.30 : 435,478.71 = 186,557.68 : x - Step 2: Convert to fraction form
315,646.30/435,478.71 = 186,557.68/x - Step 3: Cross multiply
315,646.30x = 435,478.71 × 186,557.68 - Step 4: Simplify right side
315,646.30x = 81,241,897,826.99 - Step 5: Solve for x
x = 81,241,897,826.99/315,646.30 - Step 6: Final answer
x = 257,382.70
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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.