Finding the Fourth Proportional to 257,401,869.60, 386,102,804.40 and 154,089,739.20
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Solution
The fourth proportional to 257,401,869.60, 386,102,804.40 and 154,089,739.20 is: 231,134,608.80
Step by Step Solution
- Step 1: Write the proportion equation
257,401,869.60 : 386,102,804.40 = 154,089,739.20 : x - Step 2: Convert to fraction form
257,401,869.60/386,102,804.40 = 154,089,739.20/x - Step 3: Cross multiply
257,401,869.60x = 386,102,804.40 × 154,089,739.20 - Step 4: Simplify right side
257,401,869.60x = 59,494,480,434,384,608 - Step 5: Solve for x
x = 59,494,480,434,384,608/257,401,869.60 - Step 6: Final answer
x = 231,134,608.80
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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.