Finding the Fourth Proportional to 219,030.68, 302,326.97 and 128,406.26
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Solution
The fourth proportional to 219,030.68, 302,326.97 and 128,406.26 is: 177,238.53
Step by Step Solution
- Step 1: Write the proportion equation
219,030.68 : 302,326.97 = 128,406.26 : x - Step 2: Convert to fraction form
219,030.68/302,326.97 = 128,406.26/x - Step 3: Cross multiply
219,030.68x = 302,326.97 × 128,406.26 - Step 4: Simplify right side
219,030.68x = 38,820,675,628.62 - Step 5: Solve for x
x = 38,820,675,628.62/219,030.68 - Step 6: Final answer
x = 177,238.53
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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.