Finding the Fourth Proportional to 219,223.71, 302,579.28 and 128,608.79
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Solution
The fourth proportional to 219,223.71, 302,579.28 and 128,608.79 is: 177,509.78
Step by Step Solution
- Step 1: Write the proportion equation
219,223.71 : 302,579.28 = 128,608.79 : x - Step 2: Convert to fraction form
219,223.71/302,579.28 = 128,608.79/x - Step 3: Cross multiply
219,223.71x = 302,579.28 × 128,608.79 - Step 4: Simplify right side
219,223.71x = 38,914,353,893.17 - Step 5: Solve for x
x = 38,914,353,893.17/219,223.71 - Step 6: Final answer
x = 177,509.78
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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.