Finding the Fourth Proportional to 427,256.74, 640,687.85 and 157,317.09
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Solution
The fourth proportional to 427,256.74, 640,687.85 and 157,317.09 is: 235,903.00
Step by Step Solution
- Step 1: Write the proportion equation
427,256.74 : 640,687.85 = 157,317.09 : x - Step 2: Convert to fraction form
427,256.74/640,687.85 = 157,317.09/x - Step 3: Cross multiply
427,256.74x = 640,687.85 × 157,317.09 - Step 4: Simplify right side
427,256.74x = 100,791,146,951.93 - Step 5: Solve for x
x = 100,791,146,951.93/427,256.74 - Step 6: Final answer
x = 235,903.00
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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.