Finding the Fourth Proportional to 312,130,412.22, 430,739,818.98 and 186,682,605.96
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Solution
The fourth proportional to 312,130,412.22, 430,739,818.98 and 186,682,605.96 is: 257,621,906.58
Step by Step Solution
- Step 1: Write the proportion equation
312,130,412.22 : 430,739,818.98 = 186,682,605.96 : x - Step 2: Convert to fraction form
312,130,412.22/430,739,818.98 = 186,682,605.96/x - Step 3: Cross multiply
312,130,412.22x = 430,739,818.98 × 186,682,605.96 - Step 4: Simplify right side
312,130,412.22x = 80,411,631,897,925,072 - Step 5: Solve for x
x = 80,411,631,897,925,072/312,130,412.22 - Step 6: Final answer
x = 257,621,906.58
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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.