Finding the Fourth Proportional to 257,390.40, 355,198.80 and 144,214.08
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Solution
The fourth proportional to 257,390.40, 355,198.80 and 144,214.08 is: 199,015.46
Step by Step Solution
- Step 1: Write the proportion equation
257,390.40 : 355,198.80 = 144,214.08 : x - Step 2: Convert to fraction form
257,390.40/355,198.80 = 144,214.08/x - Step 3: Cross multiply
257,390.40x = 355,198.80 × 144,214.08 - Step 4: Simplify right side
257,390.40x = 51,224,668,159.10 - Step 5: Solve for x
x = 51,224,668,159.10/257,390.40 - Step 6: Final answer
x = 199,015.46
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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.