Finding the Fourth Proportional to 285,438.12, 393,905.04 and 158,110.92
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Solution
The fourth proportional to 285,438.12, 393,905.04 and 158,110.92 is: 218,193.31
Step by Step Solution
- Step 1: Write the proportion equation
285,438.12 : 393,905.04 = 158,110.92 : x - Step 2: Convert to fraction form
285,438.12/393,905.04 = 158,110.92/x - Step 3: Cross multiply
285,438.12x = 393,905.04 × 158,110.92 - Step 4: Simplify right side
285,438.12x = 62,280,688,267.04 - Step 5: Solve for x
x = 62,280,688,267.04/285,438.12 - Step 6: Final answer
x = 218,193.31
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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.