Finding the Fourth Proportional to 422,717.13, 583,336.08 and 231,726.42
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Solution
The fourth proportional to 422,717.13, 583,336.08 and 231,726.42 is: 319,775.03
Step by Step Solution
- Step 1: Write the proportion equation
422,717.13 : 583,336.08 = 231,726.42 : x - Step 2: Convert to fraction form
422,717.13/583,336.08 = 231,726.42/x - Step 3: Cross multiply
422,717.13x = 583,336.08 × 231,726.42 - Step 4: Simplify right side
422,717.13x = 135,174,381,475.23 - Step 5: Solve for x
x = 135,174,381,475.23/422,717.13 - Step 6: Final answer
x = 319,775.03
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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.