Finding the Fourth Proportional to 217,298.79, 299,884.95 and 121,836.24
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Solution
The fourth proportional to 217,298.79, 299,884.95 and 121,836.24 is: 168,141.09
Step by Step Solution
- Step 1: Write the proportion equation
217,298.79 : 299,884.95 = 121,836.24 : x - Step 2: Convert to fraction form
217,298.79/299,884.95 = 121,836.24/x - Step 3: Cross multiply
217,298.79x = 299,884.95 × 121,836.24 - Step 4: Simplify right side
217,298.79x = 36,536,854,740.59 - Step 5: Solve for x
x = 36,536,854,740.59/217,298.79 - Step 6: Final answer
x = 168,141.09
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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.