Finding the Fourth Proportional to 245,888.16, 339,357.99 and 138,479.19
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Solution
The fourth proportional to 245,888.16, 339,357.99 and 138,479.19 is: 191,119.49
Step by Step Solution
- Step 1: Write the proportion equation
245,888.16 : 339,357.99 = 138,479.19 : x - Step 2: Convert to fraction form
245,888.16/339,357.99 = 138,479.19/x - Step 3: Cross multiply
245,888.16x = 339,357.99 × 138,479.19 - Step 4: Simplify right side
245,888.16x = 46,994,017,878.44 - Step 5: Solve for x
x = 46,994,017,878.44/245,888.16 - Step 6: Final answer
x = 191,119.49
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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.