Finding the Fourth Proportional to 208,243,719.36, 312,386,296.32 and 77,121,084.48
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Solution
The fourth proportional to 208,243,719.36, 312,386,296.32 and 77,121,084.48 is: 115,689,299.17
Step by Step Solution
- Step 1: Write the proportion equation
208,243,719.36 : 312,386,296.32 = 77,121,084.48 : x - Step 2: Convert to fraction form
208,243,719.36/312,386,296.32 = 77,121,084.48/x - Step 3: Cross multiply
208,243,719.36x = 312,386,296.32 × 77,121,084.48 - Step 4: Simplify right side
208,243,719.36x = 24,091,569,948,889,032 - Step 5: Solve for x
x = 24,091,569,948,889,032/208,243,719.36 - Step 6: Final answer
x = 115,689,299.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.