Finding the Fourth Proportional to 312,130,405.21, 430,739,809.35 and 186,682,598.95
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Solution
The fourth proportional to 312,130,405.21, 430,739,809.35 and 186,682,598.95 is: 257,621,896.93
Step by Step Solution
- Step 1: Write the proportion equation
312,130,405.21 : 430,739,809.35 = 186,682,598.95 : x - Step 2: Convert to fraction form
312,130,405.21/430,739,809.35 = 186,682,598.95/x - Step 3: Cross multiply
312,130,405.21x = 430,739,809.35 × 186,682,598.95 - Step 4: Simplify right side
312,130,405.21x = 80,411,627,080,685,504 - Step 5: Solve for x
x = 80,411,627,080,685,504/312,130,405.21 - Step 6: Final answer
x = 257,621,896.93
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.