Finding the Fourth Proportional to 217,311,246.56, 299,967,525.35 and 129,205,034.04
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Solution
The fourth proportional to 217,311,246.56, 299,967,525.35 and 129,205,034.04 is: 178,349,325.85
Step by Step Solution
- Step 1: Write the proportion equation
217,311,246.56 : 299,967,525.35 = 129,205,034.04 : x - Step 2: Convert to fraction form
217,311,246.56/299,967,525.35 = 129,205,034.04/x - Step 3: Cross multiply
217,311,246.56x = 299,967,525.35 × 129,205,034.04 - Step 4: Simplify right side
217,311,246.56x = 38,757,314,324,704,688 - Step 5: Solve for x
x = 38,757,314,324,704,688/217,311,246.56 - Step 6: Final answer
x = 178,349,325.85
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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.