Finding the Fourth Proportional to 228,952.74, 315,952.74 and 128,350.74
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Solution
The fourth proportional to 228,952.74, 315,952.74 and 128,350.74 is: 177,122.88
Step by Step Solution
- Step 1: Write the proportion equation
228,952.74 : 315,952.74 = 128,350.74 : x - Step 2: Convert to fraction form
228,952.74/315,952.74 = 128,350.74/x - Step 3: Cross multiply
228,952.74x = 315,952.74 × 128,350.74 - Step 4: Simplify right side
228,952.74x = 40,552,767,984.03 - Step 5: Solve for x
x = 40,552,767,984.03/228,952.74 - Step 6: Final answer
x = 177,122.88
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1.5x scale
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.