Finding the Fourth Proportional to 389,043.34, 536,869.11 and 216,966.53
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Solution
The fourth proportional to 389,043.34, 536,869.11 and 216,966.53 is: 299,407.85
Step by Step Solution
- Step 1: Write the proportion equation
389,043.34 : 536,869.11 = 216,966.53 : x - Step 2: Convert to fraction form
389,043.34/536,869.11 = 216,966.53/x - Step 3: Cross multiply
389,043.34x = 536,869.11 × 216,966.53 - Step 4: Simplify right side
389,043.34x = 116,482,629,203.06 - Step 5: Solve for x
x = 116,482,629,203.06/389,043.34 - Step 6: Final answer
x = 299,407.85
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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.