Finding the Fourth Proportional to 221,838.72, 306,169.12 and 126,354.28
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Solution
The fourth proportional to 221,838.72, 306,169.12 and 126,354.28 is: 174,386.95
Step by Step Solution
- Step 1: Write the proportion equation
221,838.72 : 306,169.12 = 126,354.28 : x - Step 2: Convert to fraction form
221,838.72/306,169.12 = 126,354.28/x - Step 3: Cross multiply
221,838.72x = 306,169.12 × 126,354.28 - Step 4: Simplify right side
221,838.72x = 38,685,778,715.83 - Step 5: Solve for x
x = 38,685,778,715.83/221,838.72 - Step 6: Final answer
x = 174,386.95
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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.