Finding the Fourth Proportional to 427,967.93, 642,058.50 and 128,454.05
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Solution
The fourth proportional to 427,967.93, 642,058.50 and 128,454.05 is: 192,713.07
Step by Step Solution
- Step 1: Write the proportion equation
427,967.93 : 642,058.50 = 128,454.05 : x - Step 2: Convert to fraction form
427,967.93/642,058.50 = 128,454.05/x - Step 3: Cross multiply
427,967.93x = 642,058.50 × 128,454.05 - Step 4: Simplify right side
427,967.93x = 82,475,014,661.93 - Step 5: Solve for x
x = 82,475,014,661.93/427,967.93 - Step 6: Final answer
x = 192,713.07
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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.