Finding the Fourth Proportional to 319,390.28, 440,789.64 and 238,677.68
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Solution
The fourth proportional to 319,390.28, 440,789.64 and 238,677.68 is: 329,398.40
Step by Step Solution
- Step 1: Write the proportion equation
319,390.28 : 440,789.64 = 238,677.68 : x - Step 2: Convert to fraction form
319,390.28/440,789.64 = 238,677.68/x - Step 3: Cross multiply
319,390.28x = 440,789.64 × 238,677.68 - Step 4: Simplify right side
319,390.28x = 105,206,648,643.24 - Step 5: Solve for x
x = 105,206,648,643.24/319,390.28 - Step 6: Final answer
x = 329,398.40
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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.