Finding the Fourth Proportional to 225,130.10, 310,696.40 and 128,336.26
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Solution
The fourth proportional to 225,130.10, 310,696.40 and 128,336.26 is: 177,113.65
Step by Step Solution
- Step 1: Write the proportion equation
225,130.10 : 310,696.40 = 128,336.26 : x - Step 2: Convert to fraction form
225,130.10/310,696.40 = 128,336.26/x - Step 3: Cross multiply
225,130.10x = 310,696.40 × 128,336.26 - Step 4: Simplify right side
225,130.10x = 39,873,613,329.78 - Step 5: Solve for x
x = 39,873,613,329.78/225,130.10 - Step 6: Final answer
x = 177,113.65
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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.