Finding the Fourth Proportional to 478,419.80, 717,629.70 and 194,109.80
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Solution
The fourth proportional to 478,419.80, 717,629.70 and 194,109.80 is: 291,164.70
Step by Step Solution
- Step 1: Write the proportion equation
478,419.80 : 717,629.70 = 194,109.80 : x - Step 2: Convert to fraction form
478,419.80/717,629.70 = 194,109.80/x - Step 3: Cross multiply
478,419.80x = 717,629.70 × 194,109.80 - Step 4: Simplify right side
478,419.80x = 139,298,957,541.06 - Step 5: Solve for x
x = 139,298,957,541.06/478,419.80 - Step 6: Final answer
x = 291,164.70
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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.