Finding the Fourth Proportional to 217,331.08, 299,916.68 and 121,837.76
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Solution
The fourth proportional to 217,331.08, 299,916.68 and 121,837.76 is: 168,135.99
Step by Step Solution
- Step 1: Write the proportion equation
217,331.08 : 299,916.68 = 121,837.76 : x - Step 2: Convert to fraction form
217,331.08/299,916.68 = 121,837.76/x - Step 3: Cross multiply
217,331.08x = 299,916.68 × 121,837.76 - Step 4: Simplify right side
217,331.08x = 36,541,176,477.84 - Step 5: Solve for x
x = 36,541,176,477.84/217,331.08 - Step 6: Final answer
x = 168,135.99
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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.