Finding the Fourth Proportional to 225,303.05, 310,915.44 and 121,934.84
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Solution
The fourth proportional to 225,303.05, 310,915.44 and 121,934.84 is: 168,268.58
Step by Step Solution
- Step 1: Write the proportion equation
225,303.05 : 310,915.44 = 121,934.84 : x - Step 2: Convert to fraction form
225,303.05/310,915.44 = 121,934.84/x - Step 3: Cross multiply
225,303.05x = 310,915.44 × 121,934.84 - Step 4: Simplify right side
225,303.05x = 37,911,422,875.35 - Step 5: Solve for x
x = 37,911,422,875.35/225,303.05 - Step 6: Final answer
x = 168,268.58
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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.