Finding the Fourth Proportional to 216,905.61, 299,329.68 and 121,412.34
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Solution
The fourth proportional to 216,905.61, 299,329.68 and 121,412.34 is: 167,548.99
Step by Step Solution
- Step 1: Write the proportion equation
216,905.61 : 299,329.68 = 121,412.34 : x - Step 2: Convert to fraction form
216,905.61/299,329.68 = 121,412.34/x - Step 3: Cross multiply
216,905.61x = 299,329.68 × 121,412.34 - Step 4: Simplify right side
216,905.61x = 36,342,316,880.25 - Step 5: Solve for x
x = 36,342,316,880.25/216,905.61 - Step 6: Final answer
x = 167,548.99
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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.