Finding the Fourth Proportional to 216,290,967.74, 298,877,465.72 and 157,451,480.97
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Solution
The fourth proportional to 216,290,967.74, 298,877,465.72 and 157,451,480.97 is: 217,571,265.68
Step by Step Solution
- Step 1: Write the proportion equation
216,290,967.74 : 298,877,465.72 = 157,451,480.97 : x - Step 2: Convert to fraction form
216,290,967.74/298,877,465.72 = 157,451,480.97/x - Step 3: Cross multiply
216,290,967.74x = 298,877,465.72 × 157,451,480.97 - Step 4: Simplify right side
216,290,967.74x = 47,058,699,606,568,040 - Step 5: Solve for x
x = 47,058,699,606,568,040/216,290,967.74 - Step 6: Final answer
x = 217,571,265.68
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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.