Finding the Fourth Proportional to 393,186,195.60, 589,027,267.80 and 211,372,947.60
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Solution
The fourth proportional to 393,186,195.60, 589,027,267.80 and 211,372,947.60 is: 316,655,139.99
Step by Step Solution
- Step 1: Write the proportion equation
393,186,195.60 : 589,027,267.80 = 211,372,947.60 : x - Step 2: Convert to fraction form
393,186,195.60/589,027,267.80 = 211,372,947.60/x - Step 3: Cross multiply
393,186,195.60x = 589,027,267.80 × 211,372,947.60 - Step 4: Simplify right side
393,186,195.60x = 124,504,429,811,660,560 - Step 5: Solve for x
x = 124,504,429,811,660,560/393,186,195.60 - Step 6: Final answer
x = 316,655,139.99
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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.