Finding the Fourth Proportional to 389,047.84, 536,890.12 and 219,281.96
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Solution
The fourth proportional to 389,047.84, 536,890.12 and 219,281.96 is: 302,611.42
Step by Step Solution
- Step 1: Write the proportion equation
389,047.84 : 536,890.12 = 219,281.96 : x - Step 2: Convert to fraction form
389,047.84/536,890.12 = 219,281.96/x - Step 3: Cross multiply
389,047.84x = 536,890.12 × 219,281.96 - Step 4: Simplify right side
389,047.84x = 117,730,317,818.24 - Step 5: Solve for x
x = 117,730,317,818.24/389,047.84 - Step 6: Final answer
x = 302,611.42
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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.