Finding the Fourth Proportional to 311,865,163,601.60, 430,376,452,711.86 and 172,818,767,935.68
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Solution
The fourth proportional to 311,865,163,601.60, 430,376,452,711.86 and 172,818,767,935.68 is: 238,491,300,045.32
Step by Step Solution
- Step 1: Write the proportion equation
311,865,163,601.60 : 430,376,452,711.86 = 172,818,767,935.68 : x - Step 2: Convert to fraction form
311,865,163,601.60/430,376,452,711.86 = 172,818,767,935.68/x - Step 3: Cross multiply
311,865,163,601.60x = 430,376,452,711.86 × 172,818,767,935.68 - Step 4: Simplify right side
311,865,163,601.60x = 74,377,128,306,192,081,223,680 - Step 5: Solve for x
x = 74,377,128,306,192,081,223,680/311,865,163,601.60 - Step 6: Final answer
x = 238,491,300,045.32
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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.