Finding the Fourth Proportional to 221,642.48, 305,862.36 and 121,041.20
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Solution
The fourth proportional to 221,642.48, 305,862.36 and 121,041.20 is: 167,034.53
Step by Step Solution
- Step 1: Write the proportion equation
221,642.48 : 305,862.36 = 121,041.20 : x - Step 2: Convert to fraction form
221,642.48/305,862.36 = 121,041.20/x - Step 3: Cross multiply
221,642.48x = 305,862.36 × 121,041.20 - Step 4: Simplify right side
221,642.48x = 37,021,947,089.23 - Step 5: Solve for x
x = 37,021,947,089.23/221,642.48 - Step 6: Final answer
x = 167,034.53
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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.