Finding the Fourth Proportional to 221,430,804.40, 332,146,206.60 and 85,120,634.80
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Solution
The fourth proportional to 221,430,804.40, 332,146,206.60 and 85,120,634.80 is: 127,680,952.20
Step by Step Solution
- Step 1: Write the proportion equation
221,430,804.40 : 332,146,206.60 = 85,120,634.80 : x - Step 2: Convert to fraction form
221,430,804.40/332,146,206.60 = 85,120,634.80/x - Step 3: Cross multiply
221,430,804.40x = 332,146,206.60 × 85,120,634.80 - Step 4: Simplify right side
221,430,804.40x = 28,272,495,952,203,952 - Step 5: Solve for x
x = 28,272,495,952,203,952/221,430,804.40 - Step 6: Final answer
x = 127,680,952.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.