Finding the Fourth Proportional to 280,269.99, 386,785.19 and 157,804.53
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Solution
The fourth proportional to 280,269.99, 386,785.19 and 157,804.53 is: 217,777.35
Step by Step Solution
- Step 1: Write the proportion equation
280,269.99 : 386,785.19 = 157,804.53 : x - Step 2: Convert to fraction form
280,269.99/386,785.19 = 157,804.53/x - Step 3: Cross multiply
280,269.99x = 386,785.19 × 157,804.53 - Step 4: Simplify right side
280,269.99x = 61,036,454,329.89 - Step 5: Solve for x
x = 61,036,454,329.89/280,269.99 - Step 6: Final answer
x = 217,777.35
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1.5x scale
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.