Finding the Fourth Proportional to 399,556.72, 551,381.35 and 218,263.99
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Solution
The fourth proportional to 399,556.72, 551,381.35 and 218,263.99 is: 301,200.52
Step by Step Solution
- Step 1: Write the proportion equation
399,556.72 : 551,381.35 = 218,263.99 : x - Step 2: Convert to fraction form
399,556.72/551,381.35 = 218,263.99/x - Step 3: Cross multiply
399,556.72x = 551,381.35 × 218,263.99 - Step 4: Simplify right side
399,556.72x = 120,346,693,462.59 - Step 5: Solve for x
x = 120,346,693,462.59/399,556.72 - Step 6: Final answer
x = 301,200.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.