Finding the Fourth Proportional to 252,148.16, 347,964.95 and 137,428.08
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Solution
The fourth proportional to 252,148.16, 347,964.95 and 137,428.08 is: 189,651.02
Step by Step Solution
- Step 1: Write the proportion equation
252,148.16 : 347,964.95 = 137,428.08 : x - Step 2: Convert to fraction form
252,148.16/347,964.95 = 137,428.08/x - Step 3: Cross multiply
252,148.16x = 347,964.95 × 137,428.08 - Step 4: Simplify right side
252,148.16x = 47,820,154,298.66 - Step 5: Solve for x
x = 47,820,154,298.66/252,148.16 - Step 6: Final answer
x = 189,651.02
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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.