Finding the Fourth Proportional to 402,659.18, 555,655.52 and 221,369.80
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Solution
The fourth proportional to 402,659.18, 555,655.52 and 221,369.80 is: 305,482.55
Step by Step Solution
- Step 1: Write the proportion equation
402,659.18 : 555,655.52 = 221,369.80 : x - Step 2: Convert to fraction form
402,659.18/555,655.52 = 221,369.80/x - Step 3: Cross multiply
402,659.18x = 555,655.52 × 221,369.80 - Step 4: Simplify right side
402,659.18x = 123,005,351,331.30 - Step 5: Solve for x
x = 123,005,351,331.30/402,659.18 - Step 6: Final answer
x = 305,482.55
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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.