Finding the Fourth Proportional to 248,278,478.34, 342,634,929.08 and 138,270,191.34
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Solution
The fourth proportional to 248,278,478.34, 342,634,929.08 and 138,270,191.34 is: 190,818,783.49
Step by Step Solution
- Step 1: Write the proportion equation
248,278,478.34 : 342,634,929.08 = 138,270,191.34 : x - Step 2: Convert to fraction form
248,278,478.34/342,634,929.08 = 138,270,191.34/x - Step 3: Cross multiply
248,278,478.34x = 342,634,929.08 × 138,270,191.34 - Step 4: Simplify right side
248,278,478.34x = 47,376,197,202,967,576 - Step 5: Solve for x
x = 47,376,197,202,967,576/248,278,478.34 - Step 6: Final answer
x = 190,818,783.49
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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.