Finding the Fourth Proportional to 291,350,987.40, 436,956,497.10 and 168,263,128.20
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Solution
The fourth proportional to 291,350,987.40, 436,956,497.10 and 168,263,128.20 is: 252,354,274.63
Step by Step Solution
- Step 1: Write the proportion equation
291,350,987.40 : 436,956,497.10 = 168,263,128.20 : x - Step 2: Convert to fraction form
291,350,987.40/436,956,497.10 = 168,263,128.20/x - Step 3: Cross multiply
291,350,987.40x = 436,956,497.10 × 168,263,128.20 - Step 4: Simplify right side
291,350,987.40x = 73,523,667,089,360,224 - Step 5: Solve for x
x = 73,523,667,089,360,224/291,350,987.40 - Step 6: Final answer
x = 252,354,274.63
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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.