Finding the Fourth Proportional to 257,471.08, 355,243.38 and 155,415.88
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Solution
The fourth proportional to 257,471.08, 355,243.38 and 155,415.88 is: 214,433.65
Step by Step Solution
- Step 1: Write the proportion equation
257,471.08 : 355,243.38 = 155,415.88 : x - Step 2: Convert to fraction form
257,471.08/355,243.38 = 155,415.88/x - Step 3: Cross multiply
257,471.08x = 355,243.38 × 155,415.88 - Step 4: Simplify right side
257,471.08x = 55,210,462,516.87 - Step 5: Solve for x
x = 55,210,462,516.87/257,471.08 - Step 6: Final answer
x = 214,433.65
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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.