Finding the Fourth Proportional to 389,310.80, 537,248.68 and 210,462.80
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Solution
The fourth proportional to 389,310.80, 537,248.68 and 210,462.80 is: 290,438.54
Step by Step Solution
- Step 1: Write the proportion equation
389,310.80 : 537,248.68 = 210,462.80 : x - Step 2: Convert to fraction form
389,310.80/537,248.68 = 210,462.80/x - Step 3: Cross multiply
389,310.80x = 537,248.68 × 210,462.80 - Step 4: Simplify right side
389,310.80x = 113,070,861,489.10 - Step 5: Solve for x
x = 113,070,861,489.10/389,310.80 - Step 6: Final answer
x = 290,438.54
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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.