Finding the Fourth Proportional to 312,889,708.20, 469,334,562.30 and 140,372,149.80
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Solution
The fourth proportional to 312,889,708.20, 469,334,562.30 and 140,372,149.80 is: 210,558,224.70
Step by Step Solution
- Step 1: Write the proportion equation
312,889,708.20 : 469,334,562.30 = 140,372,149.80 : x - Step 2: Convert to fraction form
312,889,708.20/469,334,562.30 = 140,372,149.80/x - Step 3: Cross multiply
312,889,708.20x = 469,334,562.30 × 140,372,149.80 - Step 4: Simplify right side
312,889,708.20x = 65,881,501,485,493,040 - Step 5: Solve for x
x = 65,881,501,485,493,040/312,889,708.20 - Step 6: Final answer
x = 210,558,224.70
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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.