Finding the Fourth Proportional to 219,048.79, 302,229.88 and 128,356.06
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Solution
The fourth proportional to 219,048.79, 302,229.88 and 128,356.06 is: 177,097.70
Step by Step Solution
- Step 1: Write the proportion equation
219,048.79 : 302,229.88 = 128,356.06 : x - Step 2: Convert to fraction form
219,048.79/302,229.88 = 128,356.06/x - Step 3: Cross multiply
219,048.79x = 302,229.88 × 128,356.06 - Step 4: Simplify right side
219,048.79x = 38,793,036,611.07 - Step 5: Solve for x
x = 38,793,036,611.07/219,048.79 - Step 6: Final answer
x = 177,097.70
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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.