Finding the Fourth Proportional to 402,548.40, 555,530.88 and 221,267.94
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Solution
The fourth proportional to 402,548.40, 555,530.88 and 221,267.94 is: 305,357.50
Step by Step Solution
- Step 1: Write the proportion equation
402,548.40 : 555,530.88 = 221,267.94 : x - Step 2: Convert to fraction form
402,548.40/555,530.88 = 221,267.94/x - Step 3: Cross multiply
402,548.40x = 555,530.88 × 221,267.94 - Step 4: Simplify right side
402,548.40x = 122,921,173,423.99 - Step 5: Solve for x
x = 122,921,173,423.99/402,548.40 - Step 6: Final answer
x = 305,357.50
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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.