Finding the Fourth Proportional to 515,030.14, 772,528.80 and 135,939.20
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Solution
The fourth proportional to 515,030.14, 772,528.80 and 135,939.20 is: 203,904.47
Step by Step Solution
- Step 1: Write the proportion equation
515,030.14 : 772,528.80 = 135,939.20 : x - Step 2: Convert to fraction form
515,030.14/772,528.80 = 135,939.20/x - Step 3: Cross multiply
515,030.14x = 772,528.80 × 135,939.20 - Step 4: Simplify right side
515,030.14x = 105,016,947,048.96 - Step 5: Solve for x
x = 105,016,947,048.96/515,030.14 - Step 6: Final answer
x = 203,904.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.