Finding the Fourth Proportional to 311,890,708.93, 430,392,126.69 and 170,734,622.53
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Solution
The fourth proportional to 311,890,708.93, 430,392,126.69 and 170,734,622.53 is: 235,604,444.72
Step by Step Solution
- Step 1: Write the proportion equation
311,890,708.93 : 430,392,126.69 = 170,734,622.53 : x - Step 2: Convert to fraction form
311,890,708.93/430,392,126.69 = 170,734,622.53/x - Step 3: Cross multiply
311,890,708.93x = 430,392,126.69 × 170,734,622.53 - Step 4: Simplify right side
311,890,708.93x = 73,482,837,290,301,088 - Step 5: Solve for x
x = 73,482,837,290,301,088/311,890,708.93 - Step 6: Final answer
x = 235,604,444.72
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1.5x scale
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.