Finding the Fourth Proportional to 213,266.18, 319,898.35 and 86,878.24
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Solution
The fourth proportional to 213,266.18, 319,898.35 and 86,878.24 is: 130,316.99
Step by Step Solution
- Step 1: Write the proportion equation
213,266.18 : 319,898.35 = 86,878.24 : x - Step 2: Convert to fraction form
213,266.18/319,898.35 = 86,878.24/x - Step 3: Cross multiply
213,266.18x = 319,898.35 × 86,878.24 - Step 4: Simplify right side
213,266.18x = 27,792,205,626.90 - Step 5: Solve for x
x = 27,792,205,626.90/213,266.18 - Step 6: Final answer
x = 130,316.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.