Finding the Fourth Proportional to 257,640.10, 386,460.15 and 173,659.30
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Solution
The fourth proportional to 257,640.10, 386,460.15 and 173,659.30 is: 260,488.95
Step by Step Solution
- Step 1: Write the proportion equation
257,640.10 : 386,460.15 = 173,659.30 : x - Step 2: Convert to fraction form
257,640.10/386,460.15 = 173,659.30/x - Step 3: Cross multiply
257,640.10x = 386,460.15 × 173,659.30 - Step 4: Simplify right side
257,640.10x = 67,112,399,126.90 - Step 5: Solve for x
x = 67,112,399,126.90/257,640.10 - Step 6: Final answer
x = 260,488.95
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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.