Finding the Fourth Proportional to 665,395.19, 998,378.71 and 216,253.70
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Solution
The fourth proportional to 665,395.19, 998,378.71 and 216,253.70 is: 324,473.47
Step by Step Solution
- Step 1: Write the proportion equation
665,395.19 : 998,378.71 = 216,253.70 : x - Step 2: Convert to fraction form
665,395.19/998,378.71 = 216,253.70/x - Step 3: Cross multiply
665,395.19x = 998,378.71 × 216,253.70 - Step 4: Simplify right side
665,395.19x = 215,903,084,506.20 - Step 5: Solve for x
x = 215,903,084,506.20/665,395.19 - Step 6: Final answer
x = 324,473.47
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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.