Finding the Fourth Proportional to 386,203.91, 532,962.05 and 216,438.03
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Solution
The fourth proportional to 386,203.91, 532,962.05 and 216,438.03 is: 298,684.85
Step by Step Solution
- Step 1: Write the proportion equation
386,203.91 : 532,962.05 = 216,438.03 : x - Step 2: Convert to fraction form
386,203.91/532,962.05 = 216,438.03/x - Step 3: Cross multiply
386,203.91x = 532,962.05 × 216,438.03 - Step 4: Simplify right side
386,203.91x = 115,353,255,084.57 - Step 5: Solve for x
x = 115,353,255,084.57/386,203.91 - Step 6: Final answer
x = 298,684.85
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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.