Finding the Fourth Proportional to 399,450,690, 551,258,976.36 and 223,238,680.18
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Solution
The fourth proportional to 399,450,690, 551,258,976.36 and 223,238,680.18 is: 308,078,892.84
Step by Step Solution
- Step 1: Write the proportion equation
399,450,690 : 551,258,976.36 = 223,238,680.18 : x - Step 2: Convert to fraction form
399,450,690/551,258,976.36 = 223,238,680.18/x - Step 3: Cross multiply
399,450,690x = 551,258,976.36 × 223,238,680.18 - Step 4: Simplify right side
399,450,690x = 123,062,326,319,443,216 - Step 5: Solve for x
x = 123,062,326,319,443,216/399,450,690 - Step 6: Final answer
x = 308,078,892.84
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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.