Finding the Fourth Proportional to 256,787,974.99, 354,368,085.06 and 139,313,301.58
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Solution
The fourth proportional to 256,787,974.99, 354,368,085.06 and 139,313,301.58 is: 192,252,724.86
Step by Step Solution
- Step 1: Write the proportion equation
256,787,974.99 : 354,368,085.06 = 139,313,301.58 : x - Step 2: Convert to fraction form
256,787,974.99/354,368,085.06 = 139,313,301.58/x - Step 3: Cross multiply
256,787,974.99x = 354,368,085.06 × 139,313,301.58 - Step 4: Simplify right side
256,787,974.99x = 49,368,187,904,290,880 - Step 5: Solve for x
x = 49,368,187,904,290,880/256,787,974.99 - Step 6: Final answer
x = 192,252,724.86
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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.