Finding the Fourth Proportional to 219,218.58, 302,220.36 and 138,605.76
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Solution
The fourth proportional to 219,218.58, 302,220.36 and 138,605.76 is: 191,085.46
Step by Step Solution
- Step 1: Write the proportion equation
219,218.58 : 302,220.36 = 138,605.76 : x - Step 2: Convert to fraction form
219,218.58/302,220.36 = 138,605.76/x - Step 3: Cross multiply
219,218.58x = 302,220.36 × 138,605.76 - Step 4: Simplify right side
219,218.58x = 41,889,482,685.27 - Step 5: Solve for x
x = 41,889,482,685.27/219,218.58 - Step 6: Final answer
x = 191,085.46
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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.