Finding the Fourth Proportional to 221,209.19, 305,268.98 and 120,607.19
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Solution
The fourth proportional to 221,209.19, 305,268.98 and 120,607.19 is: 166,438.08
Step by Step Solution
- Step 1: Write the proportion equation
221,209.19 : 305,268.98 = 120,607.19 : x - Step 2: Convert to fraction form
221,209.19/305,268.98 = 120,607.19/x - Step 3: Cross multiply
221,209.19x = 305,268.98 × 120,607.19 - Step 4: Simplify right side
221,209.19x = 36,817,633,871.97 - Step 5: Solve for x
x = 36,817,633,871.97/221,209.19 - Step 6: Final answer
x = 166,438.08
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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.