Finding the Fourth Proportional to 328,073.08, 492,109.60 and 78,755.08
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Solution
The fourth proportional to 328,073.08, 492,109.60 and 78,755.08 is: 118,132.62
Step by Step Solution
- Step 1: Write the proportion equation
328,073.08 : 492,109.60 = 78,755.08 : x - Step 2: Convert to fraction form
328,073.08/492,109.60 = 78,755.08/x - Step 3: Cross multiply
328,073.08x = 492,109.60 × 78,755.08 - Step 4: Simplify right side
328,073.08x = 38,756,130,916.77 - Step 5: Solve for x
x = 38,756,130,916.77/328,073.08 - Step 6: Final answer
x = 118,132.62
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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.