Finding the Fourth Proportional to 388,101.80, 535,291.80 and 342,699.68
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Solution
The fourth proportional to 388,101.80, 535,291.80 and 342,699.68 is: 472,670.65
Step by Step Solution
- Step 1: Write the proportion equation
388,101.80 : 535,291.80 = 342,699.68 : x - Step 2: Convert to fraction form
388,101.80/535,291.80 = 342,699.68/x - Step 3: Cross multiply
388,101.80x = 535,291.80 × 342,699.68 - Step 4: Simplify right side
388,101.80x = 183,444,328,566.62 - Step 5: Solve for x
x = 183,444,328,566.62/388,101.80 - Step 6: Final answer
x = 472,670.65
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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.