Finding the Fourth Proportional to 211,913.68, 292,457.28 and 121,298.08
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Solution
The fourth proportional to 211,913.68, 292,457.28 and 121,298.08 is: 167,400.74
Step by Step Solution
- Step 1: Write the proportion equation
211,913.68 : 292,457.28 = 121,298.08 : x - Step 2: Convert to fraction form
211,913.68/292,457.28 = 121,298.08/x - Step 3: Cross multiply
211,913.68x = 292,457.28 × 121,298.08 - Step 4: Simplify right side
211,913.68x = 35,474,506,546.02 - Step 5: Solve for x
x = 35,474,506,546.02/211,913.68 - Step 6: Final answer
x = 167,400.74
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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.