Finding the Fourth Proportional to 306,777.76, 423,342.80 and 172,615.84
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Solution
The fourth proportional to 306,777.76, 423,342.80 and 172,615.84 is: 238,203.95
Step by Step Solution
- Step 1: Write the proportion equation
306,777.76 : 423,342.80 = 172,615.84 : x - Step 2: Convert to fraction form
306,777.76/423,342.80 = 172,615.84/x - Step 3: Cross multiply
306,777.76x = 423,342.80 × 172,615.84 - Step 4: Simplify right side
306,777.76x = 73,075,673,029.95 - Step 5: Solve for x
x = 73,075,673,029.95/306,777.76 - Step 6: Final answer
x = 238,203.95
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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.