Finding the Fourth Proportional to 399,422.78, 551,207.18 and 227,332.30
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Solution
The fourth proportional to 399,422.78, 551,207.18 and 227,332.30 is: 313,720.70
Step by Step Solution
- Step 1: Write the proportion equation
399,422.78 : 551,207.18 = 227,332.30 : x - Step 2: Convert to fraction form
399,422.78/551,207.18 = 227,332.30/x - Step 3: Cross multiply
399,422.78x = 551,207.18 × 227,332.30 - Step 4: Simplify right side
399,422.78x = 125,307,196,005.91 - Step 5: Solve for x
x = 125,307,196,005.91/399,422.78 - Step 6: Final answer
x = 313,720.70
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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.