Finding the Fourth Proportional to 316,878.39, 472,860.77 and 283,227.75
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Solution
The fourth proportional to 316,878.39, 472,860.77 and 283,227.75 is: 422,645.70
Step by Step Solution
- Step 1: Write the proportion equation
316,878.39 : 472,860.77 = 283,227.75 : x - Step 2: Convert to fraction form
316,878.39/472,860.77 = 283,227.75/x - Step 3: Cross multiply
316,878.39x = 472,860.77 × 283,227.75 - Step 4: Simplify right side
316,878.39x = 133,927,290,534.23 - Step 5: Solve for x
x = 133,927,290,534.23/316,878.39 - Step 6: Final answer
x = 422,645.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.