Finding the Fourth Proportional to 354,865.86, 488,471.88 and 309,463.74
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Solution
The fourth proportional to 354,865.86, 488,471.88 and 309,463.74 is: 425,975.99
Step by Step Solution
- Step 1: Write the proportion equation
354,865.86 : 488,471.88 = 309,463.74 : x - Step 2: Convert to fraction form
354,865.86/488,471.88 = 309,463.74/x - Step 3: Cross multiply
354,865.86x = 488,471.88 × 309,463.74 - Step 4: Simplify right side
354,865.86x = 151,164,334,869.63 - Step 5: Solve for x
x = 151,164,334,869.63/354,865.86 - Step 6: Final answer
x = 425,975.99
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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.