Finding the Fourth Proportional to 402,683.28, 555,709.32 and 221,403.12
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Solution
The fourth proportional to 402,683.28, 555,709.32 and 221,403.12 is: 305,539.82
Step by Step Solution
- Step 1: Write the proportion equation
402,683.28 : 555,709.32 = 221,403.12 : x - Step 2: Convert to fraction form
402,683.28/555,709.32 = 221,403.12/x - Step 3: Cross multiply
402,683.28x = 555,709.32 × 221,403.12 - Step 4: Simplify right side
402,683.28x = 123,035,777,261.08 - Step 5: Solve for x
x = 123,035,777,261.08/402,683.28 - Step 6: Final answer
x = 305,539.82
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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.