Finding the Fourth Proportional to 165,786,403.20, 248,679,604.80 and 155,700,412.80
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Solution
The fourth proportional to 165,786,403.20, 248,679,604.80 and 155,700,412.80 is: 233,550,619.20
Step by Step Solution
- Step 1: Write the proportion equation
165,786,403.20 : 248,679,604.80 = 155,700,412.80 : x - Step 2: Convert to fraction form
165,786,403.20/248,679,604.80 = 155,700,412.80/x - Step 3: Cross multiply
165,786,403.20x = 248,679,604.80 × 155,700,412.80 - Step 4: Simplify right side
165,786,403.20x = 38,719,517,122,300,864 - Step 5: Solve for x
x = 38,719,517,122,300,864/165,786,403.20 - Step 6: Final answer
x = 233,550,619.20
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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.