Finding the Fourth Proportional to 219,019.42, 302,311.43 and 128,395.00
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Solution
The fourth proportional to 219,019.42, 302,311.43 and 128,395.00 is: 177,222.99
Step by Step Solution
- Step 1: Write the proportion equation
219,019.42 : 302,311.43 = 128,395.00 : x - Step 2: Convert to fraction form
219,019.42/302,311.43 = 128,395.00/x - Step 3: Cross multiply
219,019.42x = 302,311.43 × 128,395.00 - Step 4: Simplify right side
219,019.42x = 38,815,275,620.06 - Step 5: Solve for x
x = 38,815,275,620.06/219,019.42 - Step 6: Final answer
x = 177,222.99
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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.