Finding the Fourth Proportional to 312,087.79, 430,673.74 and 176,118.13
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Solution
The fourth proportional to 312,087.79, 430,673.74 and 176,118.13 is: 243,038.84
Step by Step Solution
- Step 1: Write the proportion equation
312,087.79 : 430,673.74 = 176,118.13 : x - Step 2: Convert to fraction form
312,087.79/430,673.74 = 176,118.13/x - Step 3: Cross multiply
312,087.79x = 430,673.74 × 176,118.13 - Step 4: Simplify right side
312,087.79x = 75,849,453,728.91 - Step 5: Solve for x
x = 75,849,453,728.91/312,087.79 - Step 6: Final answer
x = 243,038.84
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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.