Finding the Fourth Proportional to 217,904.24, 300,707.88 and 121,108.08
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Solution
The fourth proportional to 217,904.24, 300,707.88 and 121,108.08 is: 167,129.17
Step by Step Solution
- Step 1: Write the proportion equation
217,904.24 : 300,707.88 = 121,108.08 : x - Step 2: Convert to fraction form
217,904.24/300,707.88 = 121,108.08/x - Step 3: Cross multiply
217,904.24x = 300,707.88 × 121,108.08 - Step 4: Simplify right side
217,904.24x = 36,418,153,987.67 - Step 5: Solve for x
x = 36,418,153,987.67/217,904.24 - Step 6: Final answer
x = 167,129.17
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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.