Finding the Fourth Proportional to 257,807.70, 355,769.26 and 143,079.66
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Solution
The fourth proportional to 257,807.70, 355,769.26 and 143,079.66 is: 197,446.95
Step by Step Solution
- Step 1: Write the proportion equation
257,807.70 : 355,769.26 = 143,079.66 : x - Step 2: Convert to fraction form
257,807.70/355,769.26 = 143,079.66/x - Step 3: Cross multiply
257,807.70x = 355,769.26 × 143,079.66 - Step 4: Simplify right side
257,807.70x = 50,903,344,401.55 - Step 5: Solve for x
x = 50,903,344,401.55/257,807.70 - Step 6: Final answer
x = 197,446.95
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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.