Finding the Fourth Proportional to 389,056.05, 536,896.29 and 216,974.21
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Solution
The fourth proportional to 389,056.05, 536,896.29 and 216,974.21 is: 299,423.81
Step by Step Solution
- Step 1: Write the proportion equation
389,056.05 : 536,896.29 = 216,974.21 : x - Step 2: Convert to fraction form
389,056.05/536,896.29 = 216,974.21/x - Step 3: Cross multiply
389,056.05x = 536,896.29 × 216,974.21 - Step 4: Simplify right side
389,056.05x = 116,492,645,690.20 - Step 5: Solve for x
x = 116,492,645,690.20/389,056.05 - Step 6: Final answer
x = 299,423.81
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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.