Finding the Fourth Proportional to 219,153.84, 328,745.40 and 76,981.92
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Solution
The fourth proportional to 219,153.84, 328,745.40 and 76,981.92 is: 115,478.02
Step by Step Solution
- Step 1: Write the proportion equation
219,153.84 : 328,745.40 = 76,981.92 : x - Step 2: Convert to fraction form
219,153.84/328,745.40 = 76,981.92/x - Step 3: Cross multiply
219,153.84x = 328,745.40 × 76,981.92 - Step 4: Simplify right side
219,153.84x = 25,307,452,083.17 - Step 5: Solve for x
x = 25,307,452,083.17/219,153.84 - Step 6: Final answer
x = 115,478.02
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1.5x scale
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.