Finding the Fourth Proportional to 306,908.53, 423,387.07 and 238,457.05
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Solution
The fourth proportional to 306,908.53, 423,387.07 and 238,457.05 is: 328,956.75
Step by Step Solution
- Step 1: Write the proportion equation
306,908.53 : 423,387.07 = 238,457.05 : x - Step 2: Convert to fraction form
306,908.53/423,387.07 = 238,457.05/x - Step 3: Cross multiply
306,908.53x = 423,387.07 × 238,457.05 - Step 4: Simplify right side
306,908.53x = 100,959,631,720.34 - Step 5: Solve for x
x = 100,959,631,720.34/306,908.53 - Step 6: Final answer
x = 328,956.75
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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.