Finding the Fourth Proportional to 420,325.20, 580,135.08 and 257,009.64
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Solution
The fourth proportional to 420,325.20, 580,135.08 and 257,009.64 is: 354,726.07
Step by Step Solution
- Step 1: Write the proportion equation
420,325.20 : 580,135.08 = 257,009.64 : x - Step 2: Convert to fraction form
420,325.20/580,135.08 = 257,009.64/x - Step 3: Cross multiply
420,325.20x = 580,135.08 × 257,009.64 - Step 4: Simplify right side
420,325.20x = 149,100,308,062.17 - Step 5: Solve for x
x = 149,100,308,062.17/420,325.20 - Step 6: Final answer
x = 354,726.07
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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.