Finding the Fourth Proportional to 328,971.90, 453,981.99 and 178,069.02
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Solution
The fourth proportional to 328,971.90, 453,981.99 and 178,069.02 is: 245,735.66
Step by Step Solution
- Step 1: Write the proportion equation
328,971.90 : 453,981.99 = 178,069.02 : x - Step 2: Convert to fraction form
328,971.90/453,981.99 = 178,069.02/x - Step 3: Cross multiply
328,971.90x = 453,981.99 × 178,069.02 - Step 4: Simplify right side
328,971.90x = 80,840,128,056.95 - Step 5: Solve for x
x = 80,840,128,056.95/328,971.90 - Step 6: Final answer
x = 245,735.66
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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.