Finding the Fourth Proportional to 425,992.80, 638,921.36 and 141,659.68
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Solution
The fourth proportional to 425,992.80, 638,921.36 and 141,659.68 is: 212,466.96
Step by Step Solution
- Step 1: Write the proportion equation
425,992.80 : 638,921.36 = 141,659.68 : x - Step 2: Convert to fraction form
425,992.80/638,921.36 = 141,659.68/x - Step 3: Cross multiply
425,992.80x = 638,921.36 × 141,659.68 - Step 4: Simplify right side
425,992.80x = 90,509,395,402.76 - Step 5: Solve for x
x = 90,509,395,402.76/425,992.80 - Step 6: Final answer
x = 212,466.96
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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.