Finding the Fourth Proportional to 306,543.70, 459,815.55 and 84,927.70
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Solution
The fourth proportional to 306,543.70, 459,815.55 and 84,927.70 is: 127,391.55
Step by Step Solution
- Step 1: Write the proportion equation
306,543.70 : 459,815.55 = 84,927.70 : x - Step 2: Convert to fraction form
306,543.70/459,815.55 = 84,927.70/x - Step 3: Cross multiply
306,543.70x = 459,815.55 × 84,927.70 - Step 4: Simplify right side
306,543.70x = 39,051,077,085.74 - Step 5: Solve for x
x = 39,051,077,085.74/306,543.70 - Step 6: Final answer
x = 127,391.55
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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.