Finding the Fourth Proportional to 309,979.98, 427,772.21 and 174,014.19
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Solution
The fourth proportional to 309,979.98, 427,772.21 and 174,014.19 is: 240,139.49
Step by Step Solution
- Step 1: Write the proportion equation
309,979.98 : 427,772.21 = 174,014.19 : x - Step 2: Convert to fraction form
309,979.98/427,772.21 = 174,014.19/x - Step 3: Cross multiply
309,979.98x = 427,772.21 × 174,014.19 - Step 4: Simplify right side
309,979.98x = 74,438,433,757.59 - Step 5: Solve for x
x = 74,438,433,757.59/309,979.98 - Step 6: Final answer
x = 240,139.49
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1.5x scale
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.