Finding the Fourth Proportional to 389,805.19, 537,931.16 and 210,957.19
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Solution
The fourth proportional to 389,805.19, 537,931.16 and 210,957.19 is: 291,120.92
Step by Step Solution
- Step 1: Write the proportion equation
389,805.19 : 537,931.16 = 210,957.19 : x - Step 2: Convert to fraction form
389,805.19/537,931.16 = 210,957.19/x - Step 3: Cross multiply
389,805.19x = 537,931.16 × 210,957.19 - Step 4: Simplify right side
389,805.19x = 113,480,444,318.52 - Step 5: Solve for x
x = 113,480,444,318.52/389,805.19 - Step 6: Final answer
x = 291,120.92
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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.