Finding the Fourth Proportional to 389,113.02, 536,965.20 and 217,036.08
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Solution
The fourth proportional to 389,113.02, 536,965.20 and 217,036.08 is: 299,503.78
Step by Step Solution
- Step 1: Write the proportion equation
389,113.02 : 536,965.20 = 217,036.08 : x - Step 2: Convert to fraction form
389,113.02/536,965.20 = 217,036.08/x - Step 3: Cross multiply
389,113.02x = 536,965.20 × 217,036.08 - Step 4: Simplify right side
389,113.02x = 116,540,822,104.42 - Step 5: Solve for x
x = 116,540,822,104.42/389,113.02 - Step 6: Final answer
x = 299,503.78
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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.