Finding the Fourth Proportional to 219,405.01, 302,811.24 and 128,810.95
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Solution
The fourth proportional to 219,405.01, 302,811.24 and 128,810.95 is: 177,778.09
Step by Step Solution
- Step 1: Write the proportion equation
219,405.01 : 302,811.24 = 128,810.95 : x - Step 2: Convert to fraction form
219,405.01/302,811.24 = 128,810.95/x - Step 3: Cross multiply
219,405.01x = 302,811.24 × 128,810.95 - Step 4: Simplify right side
219,405.01x = 39,005,403,495.08 - Step 5: Solve for x
x = 39,005,403,495.08/219,405.01 - Step 6: Final answer
x = 177,778.09
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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.