Finding the Fourth Proportional to 247,974.23, 342,208.18 and 139,102.70
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Solution
The fourth proportional to 247,974.23, 342,208.18 and 139,102.70 is: 191,963.83
Step by Step Solution
- Step 1: Write the proportion equation
247,974.23 : 342,208.18 = 139,102.70 : x - Step 2: Convert to fraction form
247,974.23/342,208.18 = 139,102.70/x - Step 3: Cross multiply
247,974.23x = 342,208.18 × 139,102.70 - Step 4: Simplify right side
247,974.23x = 47,602,081,800.09 - Step 5: Solve for x
x = 47,602,081,800.09/247,974.23 - Step 6: Final answer
x = 191,963.83
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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.