Finding the Fourth Proportional to 478,910.99, 718,617.99 and 212,862.44
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Solution
The fourth proportional to 478,910.99, 718,617.99 and 212,862.44 is: 319,405.45
Step by Step Solution
- Step 1: Write the proportion equation
478,910.99 : 718,617.99 = 212,862.44 : x - Step 2: Convert to fraction form
478,910.99/718,617.99 = 212,862.44/x - Step 3: Cross multiply
478,910.99x = 718,617.99 × 212,862.44 - Step 4: Simplify right side
478,910.99x = 152,966,778,779.30 - Step 5: Solve for x
x = 152,966,778,779.30/478,910.99 - Step 6: Final answer
x = 319,405.45
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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.