Finding the Fourth Proportional to 399,530.19, 551,330.58 and 218,239.50
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Solution
The fourth proportional to 399,530.19, 551,330.58 and 218,239.50 is: 301,158.99
Step by Step Solution
- Step 1: Write the proportion equation
399,530.19 : 551,330.58 = 218,239.50 : x - Step 2: Convert to fraction form
399,530.19/551,330.58 = 218,239.50/x - Step 3: Cross multiply
399,530.19x = 551,330.58 × 218,239.50 - Step 4: Simplify right side
399,530.19x = 120,322,110,113.91 - Step 5: Solve for x
x = 120,322,110,113.91/399,530.19 - Step 6: Final answer
x = 301,158.99
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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.