Finding the Fourth Proportional to 386,205.41, 532,964.12 and 216,439.53
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Solution
The fourth proportional to 386,205.41, 532,964.12 and 216,439.53 is: 298,686.92
Step by Step Solution
- Step 1: Write the proportion equation
386,205.41 : 532,964.12 = 216,439.53 : x - Step 2: Convert to fraction form
386,205.41/532,964.12 = 216,439.53/x - Step 3: Cross multiply
386,205.41x = 532,964.12 × 216,439.53 - Step 4: Simplify right side
386,205.41x = 115,354,502,557.47 - Step 5: Solve for x
x = 115,354,502,557.47/386,205.41 - Step 6: Final answer
x = 298,686.92
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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.