Finding the Fourth Proportional to 257,985.98, 386,828.62 and 100,029.92
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Solution
The fourth proportional to 257,985.98, 386,828.62 and 100,029.92 is: 149,986.58
Step by Step Solution
- Step 1: Write the proportion equation
257,985.98 : 386,828.62 = 100,029.92 : x - Step 2: Convert to fraction form
257,985.98/386,828.62 = 100,029.92/x - Step 3: Cross multiply
257,985.98x = 386,828.62 × 100,029.92 - Step 4: Simplify right side
257,985.98x = 38,694,435,912.31 - Step 5: Solve for x
x = 38,694,435,912.31/257,985.98 - Step 6: Final answer
x = 149,986.58
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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.