Finding the Fourth Proportional to 346,090.70, 519,136.05 and 257,517.20
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Solution
The fourth proportional to 346,090.70, 519,136.05 and 257,517.20 is: 386,275.80
Step by Step Solution
- Step 1: Write the proportion equation
346,090.70 : 519,136.05 = 257,517.20 : x - Step 2: Convert to fraction form
346,090.70/519,136.05 = 257,517.20/x - Step 3: Cross multiply
346,090.70x = 519,136.05 × 257,517.20 - Step 4: Simplify right side
346,090.70x = 133,686,462,015.06 - Step 5: Solve for x
x = 133,686,462,015.06/346,090.70 - Step 6: Final answer
x = 386,275.80
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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.