Finding the Fourth Proportional to 215,135.49, 297,019.80 and 138,681.75
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Solution
The fourth proportional to 215,135.49, 297,019.80 and 138,681.75 is: 191,466.44
Step by Step Solution
- Step 1: Write the proportion equation
215,135.49 : 297,019.80 = 138,681.75 : x - Step 2: Convert to fraction form
215,135.49/297,019.80 = 138,681.75/x - Step 3: Cross multiply
215,135.49x = 297,019.80 × 138,681.75 - Step 4: Simplify right side
215,135.49x = 41,191,225,648.65 - Step 5: Solve for x
x = 41,191,225,648.65/215,135.49 - Step 6: Final answer
x = 191,466.44
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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.