Finding the Fourth Proportional to 389,561.20, 537,594.99 and 219,811.12
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Solution
The fourth proportional to 389,561.20, 537,594.99 and 219,811.12 is: 303,339.65
Step by Step Solution
- Step 1: Write the proportion equation
389,561.20 : 537,594.99 = 219,811.12 : x - Step 2: Convert to fraction form
389,561.20/537,594.99 = 219,811.12/x - Step 3: Cross multiply
389,561.20x = 537,594.99 × 219,811.12 - Step 4: Simplify right side
389,561.20x = 118,169,356,858.29 - Step 5: Solve for x
x = 118,169,356,858.29/389,561.20 - Step 6: Final answer
x = 303,339.65
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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.