Finding the Fourth Proportional to 251,143.70, 376,715.55 and 84,931.70
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Solution
The fourth proportional to 251,143.70, 376,715.55 and 84,931.70 is: 127,397.55
Step by Step Solution
- Step 1: Write the proportion equation
251,143.70 : 376,715.55 = 84,931.70 : x - Step 2: Convert to fraction form
251,143.70/376,715.55 = 84,931.70/x - Step 3: Cross multiply
251,143.70x = 376,715.55 × 84,931.70 - Step 4: Simplify right side
251,143.70x = 31,995,092,077.94 - Step 5: Solve for x
x = 31,995,092,077.94/251,143.70 - Step 6: Final answer
x = 127,397.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.