Finding the Fourth Proportional to 312,164,028.82, 430,754,964.42 and 172,908,772.12
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Solution
The fourth proportional to 312,164,028.82, 430,754,964.42 and 172,908,772.12 is: 238,596,715.53
Step by Step Solution
- Step 1: Write the proportion equation
312,164,028.82 : 430,754,964.42 = 172,908,772.12 : x - Step 2: Convert to fraction form
312,164,028.82/430,754,964.42 = 172,908,772.12/x - Step 3: Cross multiply
312,164,028.82x = 430,754,964.42 × 172,908,772.12 - Step 4: Simplify right side
312,164,028.82x = 74,481,311,982,456,496 - Step 5: Solve for x
x = 74,481,311,982,456,496/312,164,028.82 - Step 6: Final answer
x = 238,596,715.53
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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.