Finding the Fourth Proportional to 207,495,712.86, 286,476,145.14 and 129,294,152.70
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Solution
The fourth proportional to 207,495,712.86, 286,476,145.14 and 129,294,152.70 is: 178,508,220.45
Step by Step Solution
- Step 1: Write the proportion equation
207,495,712.86 : 286,476,145.14 = 129,294,152.70 : x - Step 2: Convert to fraction form
207,495,712.86/286,476,145.14 = 129,294,152.70/x - Step 3: Cross multiply
207,495,712.86x = 286,476,145.14 × 129,294,152.70 - Step 4: Simplify right side
207,495,712.86x = 37,039,690,454,638,520 - Step 5: Solve for x
x = 37,039,690,454,638,520/207,495,712.86 - Step 6: Final answer
x = 178,508,220.45
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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.