Finding the Fourth Proportional to 402,538.41, 555,508.68 and 221,267.07
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Solution
The fourth proportional to 402,538.41, 555,508.68 and 221,267.07 is: 305,351.68
Step by Step Solution
- Step 1: Write the proportion equation
402,538.41 : 555,508.68 = 221,267.07 : x - Step 2: Convert to fraction form
402,538.41/555,508.68 = 221,267.07/x - Step 3: Cross multiply
402,538.41x = 555,508.68 × 221,267.07 - Step 4: Simplify right side
402,538.41x = 122,915,777,983.17 - Step 5: Solve for x
x = 122,915,777,983.17/402,538.41 - Step 6: Final answer
x = 305,351.68
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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.