Finding the Fourth Proportional to 389,357.75, 537,313.70 and 210,509.75
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Solution
The fourth proportional to 389,357.75, 537,313.70 and 210,509.75 is: 290,503.46
Step by Step Solution
- Step 1: Write the proportion equation
389,357.75 : 537,313.70 = 210,509.75 : x - Step 2: Convert to fraction form
389,357.75/537,313.70 = 210,509.75/x - Step 3: Cross multiply
389,357.75x = 537,313.70 × 210,509.75 - Step 4: Simplify right side
389,357.75x = 113,109,772,658.58 - Step 5: Solve for x
x = 113,109,772,658.58/389,357.75 - Step 6: Final answer
x = 290,503.46
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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.