Finding the Fourth Proportional to 399,450,689.88, 551,258,976.19 and 223,238,680.05
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Solution
The fourth proportional to 399,450,689.88, 551,258,976.19 and 223,238,680.05 is: 308,078,892.66
Step by Step Solution
- Step 1: Write the proportion equation
399,450,689.88 : 551,258,976.19 = 223,238,680.05 : x - Step 2: Convert to fraction form
399,450,689.88/551,258,976.19 = 223,238,680.05/x - Step 3: Cross multiply
399,450,689.88x = 551,258,976.19 × 223,238,680.05 - Step 4: Simplify right side
399,450,689.88x = 123,062,326,210,370,000 - Step 5: Solve for x
x = 123,062,326,210,370,000/399,450,689.88 - Step 6: Final answer
x = 308,078,892.66
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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.