Finding the Fourth Proportional to 219,500.28, 302,904.19 and 128,854.80
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Solution
The fourth proportional to 219,500.28, 302,904.19 and 128,854.80 is: 177,815.99
Step by Step Solution
- Step 1: Write the proportion equation
219,500.28 : 302,904.19 = 128,854.80 : x - Step 2: Convert to fraction form
219,500.28/302,904.19 = 128,854.80/x - Step 3: Cross multiply
219,500.28x = 302,904.19 × 128,854.80 - Step 4: Simplify right side
219,500.28x = 39,030,658,821.61 - Step 5: Solve for x
x = 39,030,658,821.61/219,500.28 - Step 6: Final answer
x = 177,815.99
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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.