Finding the Fourth Proportional to 402,811.71, 555,867.40 and 221,523.06
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Solution
The fourth proportional to 402,811.71, 555,867.40 and 221,523.06 is: 305,694.81
Step by Step Solution
- Step 1: Write the proportion equation
402,811.71 : 555,867.40 = 221,523.06 : x - Step 2: Convert to fraction form
402,811.71/555,867.40 = 221,523.06/x - Step 3: Cross multiply
402,811.71x = 555,867.40 × 221,523.06 - Step 4: Simplify right side
402,811.71x = 123,137,447,402.24 - Step 5: Solve for x
x = 123,137,447,402.24/402,811.71 - Step 6: Final answer
x = 305,694.81
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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.