Finding the Fourth Proportional to 219,277.71, 302,551.89 and 128,628.99
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Solution
The fourth proportional to 219,277.71, 302,551.89 and 128,628.99 is: 177,477.88
Step by Step Solution
- Step 1: Write the proportion equation
219,277.71 : 302,551.89 = 128,628.99 : x - Step 2: Convert to fraction form
219,277.71/302,551.89 = 128,628.99/x - Step 3: Cross multiply
219,277.71x = 302,551.89 × 128,628.99 - Step 4: Simplify right side
219,277.71x = 38,916,944,033.29 - Step 5: Solve for x
x = 38,916,944,033.29/219,277.71 - Step 6: Final answer
x = 177,477.88
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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.