Finding the Fourth Proportional to 386,469,468.84, 533,332,095.94 and 210,258,465.96
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Solution
The fourth proportional to 386,469,468.84, 533,332,095.94 and 210,258,465.96 is: 290,158,983.78
Step by Step Solution
- Step 1: Write the proportion equation
386,469,468.84 : 533,332,095.94 = 210,258,465.96 : x - Step 2: Convert to fraction form
386,469,468.84/533,332,095.94 = 210,258,465.96/x - Step 3: Cross multiply
386,469,468.84x = 533,332,095.94 × 210,258,465.96 - Step 4: Simplify right side
386,469,468.84x = 112,137,588,339,575,952 - Step 5: Solve for x
x = 112,137,588,339,575,952/386,469,468.84 - Step 6: Final answer
x = 290,158,983.78
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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.