Finding the Fourth Proportional to 478,009.40, 717,137.12 and 141,036.44
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Solution
The fourth proportional to 478,009.40, 717,137.12 and 141,036.44 is: 211,590.95
Step by Step Solution
- Step 1: Write the proportion equation
478,009.40 : 717,137.12 = 141,036.44 : x - Step 2: Convert to fraction form
478,009.40/717,137.12 = 141,036.44/x - Step 3: Cross multiply
478,009.40x = 717,137.12 × 141,036.44 - Step 4: Simplify right side
478,009.40x = 101,142,463,163.56 - Step 5: Solve for x
x = 101,142,463,163.56/478,009.40 - Step 6: Final answer
x = 211,590.95
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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.