Finding the Fourth Proportional to 217,620,000.40, 326,430,000.60 and 148,745,246.80
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Solution
The fourth proportional to 217,620,000.40, 326,430,000.60 and 148,745,246.80 is: 223,117,870.20
Step by Step Solution
- Step 1: Write the proportion equation
217,620,000.40 : 326,430,000.60 = 148,745,246.80 : x - Step 2: Convert to fraction form
217,620,000.40/326,430,000.60 = 148,745,246.80/x - Step 3: Cross multiply
217,620,000.40x = 326,430,000.60 × 148,745,246.80 - Step 4: Simplify right side
217,620,000.40x = 48,554,911,002,171,152 - Step 5: Solve for x
x = 48,554,911,002,171,152/217,620,000.40 - Step 6: Final answer
x = 223,117,870.20
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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.