Finding the Fourth Proportional to 399,728.32, 551,865.36 and 249,029.44
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Solution
The fourth proportional to 399,728.32, 551,865.36 and 249,029.44 is: 343,810.32
Step by Step Solution
- Step 1: Write the proportion equation
399,728.32 : 551,865.36 = 249,029.44 : x - Step 2: Convert to fraction form
399,728.32/551,865.36 = 249,029.44/x - Step 3: Cross multiply
399,728.32x = 551,865.36 × 249,029.44 - Step 4: Simplify right side
399,728.32x = 137,430,721,556.20 - Step 5: Solve for x
x = 137,430,721,556.20/399,728.32 - Step 6: Final answer
x = 343,810.32
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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.