Finding the Fourth Proportional to 385,735,028.49, 532,358,497.17 and 216,235,046.21
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Solution
The fourth proportional to 385,735,028.49, 532,358,497.17 and 216,235,046.21 is: 298,429,117.74
Step by Step Solution
- Step 1: Write the proportion equation
385,735,028.49 : 532,358,497.17 = 216,235,046.21 : x - Step 2: Convert to fraction form
385,735,028.49/532,358,497.17 = 216,235,046.21/x - Step 3: Cross multiply
385,735,028.49x = 532,358,497.17 × 216,235,046.21 - Step 4: Simplify right side
385,735,028.49x = 115,114,564,233,179,328 - Step 5: Solve for x
x = 115,114,564,233,179,328/385,735,028.49 - Step 6: Final answer
x = 298,429,117.74
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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.