Finding the Fourth Proportional to 312,130,404.21, 430,739,807.97 and 186,682,597.95
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Solution
The fourth proportional to 312,130,404.21, 430,739,807.97 and 186,682,597.95 is: 257,621,895.55
Step by Step Solution
- Step 1: Write the proportion equation
312,130,404.21 : 430,739,807.97 = 186,682,597.95 : x - Step 2: Convert to fraction form
312,130,404.21/430,739,807.97 = 186,682,597.95/x - Step 3: Cross multiply
312,130,404.21x = 430,739,807.97 × 186,682,597.95 - Step 4: Simplify right side
312,130,404.21x = 80,411,626,392,323,712 - Step 5: Solve for x
x = 80,411,626,392,323,712/312,130,404.21 - Step 6: Final answer
x = 257,621,895.55
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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.