Finding the Fourth Proportional to 242,138.21, 334,155.20 and 134,718.26
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Solution
The fourth proportional to 242,138.21, 334,155.20 and 134,718.26 is: 185,913.68
Step by Step Solution
- Step 1: Write the proportion equation
242,138.21 : 334,155.20 = 134,718.26 : x - Step 2: Convert to fraction form
242,138.21/334,155.20 = 134,718.26/x - Step 3: Cross multiply
242,138.21x = 334,155.20 × 134,718.26 - Step 4: Simplify right side
242,138.21x = 45,016,804,769.58 - Step 5: Solve for x
x = 45,016,804,769.58/242,138.21 - Step 6: Final answer
x = 185,913.68
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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.