Finding the Fourth Proportional to 420,461.43, 580,054.74 and 257,125.07
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Solution
The fourth proportional to 420,461.43, 580,054.74 and 257,125.07 is: 354,721.27
Step by Step Solution
- Step 1: Write the proportion equation
420,461.43 : 580,054.74 = 257,125.07 : x - Step 2: Convert to fraction form
420,461.43/580,054.74 = 257,125.07/x - Step 3: Cross multiply
420,461.43x = 580,054.74 × 257,125.07 - Step 4: Simplify right side
420,461.43x = 149,146,612,726.06 - Step 5: Solve for x
x = 149,146,612,726.06/420,461.43 - Step 6: Final answer
x = 354,721.27
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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.