Finding the Fourth Proportional to 221,830.84, 306,128.82 and 121,228.84
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Solution
The fourth proportional to 221,830.84, 306,128.82 and 121,228.84 is: 167,297.03
Step by Step Solution
- Step 1: Write the proportion equation
221,830.84 : 306,128.82 = 121,228.84 : x - Step 2: Convert to fraction form
221,830.84/306,128.82 = 121,228.84/x - Step 3: Cross multiply
221,830.84x = 306,128.82 × 121,228.84 - Step 4: Simplify right side
221,830.84x = 37,111,641,739.17 - Step 5: Solve for x
x = 37,111,641,739.17/221,830.84 - Step 6: Final answer
x = 167,297.03
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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.