Finding the Fourth Proportional to 257,047.68, 354,709.12 and 143,869.44
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Solution
The fourth proportional to 257,047.68, 354,709.12 and 143,869.44 is: 198,530.49
Step by Step Solution
- Step 1: Write the proportion equation
257,047.68 : 354,709.12 = 143,869.44 : x - Step 2: Convert to fraction form
257,047.68/354,709.12 = 143,869.44/x - Step 3: Cross multiply
257,047.68x = 354,709.12 × 143,869.44 - Step 4: Simplify right side
257,047.68x = 51,031,802,457.29 - Step 5: Solve for x
x = 51,031,802,457.29/257,047.68 - Step 6: Final answer
x = 198,530.49
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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.