Finding the Fourth Proportional to 257,038.97, 354,702.11 and 142,309.49
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Solution
The fourth proportional to 257,038.97, 354,702.11 and 142,309.49 is: 196,380.63
Step by Step Solution
- Step 1: Write the proportion equation
257,038.97 : 354,702.11 = 142,309.49 : x - Step 2: Convert to fraction form
257,038.97/354,702.11 = 142,309.49/x - Step 3: Cross multiply
257,038.97x = 354,702.11 × 142,309.49 - Step 4: Simplify right side
257,038.97x = 50,477,473,890.97 - Step 5: Solve for x
x = 50,477,473,890.97/257,038.97 - Step 6: Final answer
x = 196,380.63
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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.