Finding the Fourth Proportional to 226,726.64, 312,909.72 and 129,965.12
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Solution
The fourth proportional to 226,726.64, 312,909.72 and 129,965.12 is: 179,367.32
Step by Step Solution
- Step 1: Write the proportion equation
226,726.64 : 312,909.72 = 129,965.12 : x - Step 2: Convert to fraction form
226,726.64/312,909.72 = 129,965.12/x - Step 3: Cross multiply
226,726.64x = 312,909.72 × 129,965.12 - Step 4: Simplify right side
226,726.64x = 40,667,349,308.97 - Step 5: Solve for x
x = 40,667,349,308.97/226,726.64 - Step 6: Final answer
x = 179,367.32
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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.