Finding the Fourth Proportional to 402,691.08, 555,701.94 and 221,402.82
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Solution
The fourth proportional to 402,691.08, 555,701.94 and 221,402.82 is: 305,529.43
Step by Step Solution
- Step 1: Write the proportion equation
402,691.08 : 555,701.94 = 221,402.82 : x - Step 2: Convert to fraction form
402,691.08/555,701.94 = 221,402.82/x - Step 3: Cross multiply
402,691.08x = 555,701.94 × 221,402.82 - Step 4: Simplify right side
402,691.08x = 123,033,976,595.47 - Step 5: Solve for x
x = 123,033,976,595.47/402,691.08 - Step 6: Final answer
x = 305,529.43
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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.