Finding the Fourth Proportional to 210,428.97, 315,644.31 and 52,656.99
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Solution
The fourth proportional to 210,428.97, 315,644.31 and 52,656.99 is: 78,985.70
Step by Step Solution
- Step 1: Write the proportion equation
210,428.97 : 315,644.31 = 52,656.99 : x - Step 2: Convert to fraction form
210,428.97/315,644.31 = 52,656.99/x - Step 3: Cross multiply
210,428.97x = 315,644.31 × 52,656.99 - Step 4: Simplify right side
210,428.97x = 16,620,879,275.23 - Step 5: Solve for x
x = 16,620,879,275.23/210,428.97 - Step 6: Final answer
x = 78,985.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.