Finding the Fourth Proportional to 256,412.97, 384,670.53 and 78,913.26
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Solution
The fourth proportional to 256,412.97, 384,670.53 and 78,913.26 is: 118,385.61
Step by Step Solution
- Step 1: Write the proportion equation
256,412.97 : 384,670.53 = 78,913.26 : x - Step 2: Convert to fraction form
256,412.97/384,670.53 = 78,913.26/x - Step 3: Cross multiply
256,412.97x = 384,670.53 × 78,913.26 - Step 4: Simplify right side
256,412.97x = 30,355,605,548.23 - Step 5: Solve for x
x = 30,355,605,548.23/256,412.97 - Step 6: Final answer
x = 118,385.61
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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.