Finding the Fourth Proportional to 219,440.68, 302,809.62 and 128,786.92
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Solution
The fourth proportional to 219,440.68, 302,809.62 and 128,786.92 is: 177,715.08
Step by Step Solution
- Step 1: Write the proportion equation
219,440.68 : 302,809.62 = 128,786.92 : x - Step 2: Convert to fraction form
219,440.68/302,809.62 = 128,786.92/x - Step 3: Cross multiply
219,440.68x = 302,809.62 × 128,786.92 - Step 4: Simplify right side
219,440.68x = 38,997,918,306.17 - Step 5: Solve for x
x = 38,997,918,306.17/219,440.68 - Step 6: Final answer
x = 177,715.08
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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.