Finding the Fourth Proportional to 388,643.98, 536,321.49 and 211,835.91
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Solution
The fourth proportional to 388,643.98, 536,321.49 and 211,835.91 is: 292,329.63
Step by Step Solution
- Step 1: Write the proportion equation
388,643.98 : 536,321.49 = 211,835.91 : x - Step 2: Convert to fraction form
388,643.98/536,321.49 = 211,835.91/x - Step 3: Cross multiply
388,643.98x = 536,321.49 × 211,835.91 - Step 4: Simplify right side
388,643.98x = 113,612,150,886.71 - Step 5: Solve for x
x = 113,612,150,886.71/388,643.98 - Step 6: Final answer
x = 292,329.63
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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.