Finding the Fourth Proportional to 257,430,689.40, 386,146,034.10 and 236,267,527.80
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Solution
The fourth proportional to 257,430,689.40, 386,146,034.10 and 236,267,527.80 is: 354,401,291.70
Step by Step Solution
- Step 1: Write the proportion equation
257,430,689.40 : 386,146,034.10 = 236,267,527.80 : x - Step 2: Convert to fraction form
257,430,689.40/386,146,034.10 = 236,267,527.80/x - Step 3: Cross multiply
257,430,689.40x = 386,146,034.10 × 236,267,527.80 - Step 4: Simplify right side
257,430,689.40x = 91,233,768,846,581,504 - Step 5: Solve for x
x = 91,233,768,846,581,504/257,430,689.40 - Step 6: Final answer
x = 354,401,291.70
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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.