Finding the Fourth Proportional to 307,649,969.88, 424,556,979.15 and 168,420,731.65
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Solution
The fourth proportional to 307,649,969.88, 424,556,979.15 and 168,420,731.65 is: 232,420,621.02
Step by Step Solution
- Step 1: Write the proportion equation
307,649,969.88 : 424,556,979.15 = 168,420,731.65 : x - Step 2: Convert to fraction form
307,649,969.88/424,556,979.15 = 168,420,731.65/x - Step 3: Cross multiply
307,649,969.88x = 424,556,979.15 × 168,420,731.65 - Step 4: Simplify right side
307,649,969.88x = 71,504,197,055,556,792 - Step 5: Solve for x
x = 71,504,197,055,556,792/307,649,969.88 - Step 6: Final answer
x = 232,420,621.02
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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.