Finding the Fourth Proportional to 216,974.23, 299,421.09 and 121,484.34
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Solution
The fourth proportional to 216,974.23, 299,421.09 and 121,484.34 is: 167,646.52
Step by Step Solution
- Step 1: Write the proportion equation
216,974.23 : 299,421.09 = 121,484.34 : x - Step 2: Convert to fraction form
216,974.23/299,421.09 = 121,484.34/x - Step 3: Cross multiply
216,974.23x = 299,421.09 × 121,484.34 - Step 4: Simplify right side
216,974.23x = 36,374,973,500.73 - Step 5: Solve for x
x = 36,374,973,500.73/216,974.23 - Step 6: Final answer
x = 167,646.52
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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.