Finding the Fourth Proportional to 381,621,785.74, 526,650,852.34 and 212,083,168.02
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Solution
The fourth proportional to 381,621,785.74, 526,650,852.34 and 212,083,168.02 is: 292,681,878.70
Step by Step Solution
- Step 1: Write the proportion equation
381,621,785.74 : 526,650,852.34 = 212,083,168.02 : x - Step 2: Convert to fraction form
381,621,785.74/526,650,852.34 = 212,083,168.02/x - Step 3: Cross multiply
381,621,785.74x = 526,650,852.34 × 212,083,168.02 - Step 4: Simplify right side
381,621,785.74x = 111,693,781,204,700,432 - Step 5: Solve for x
x = 111,693,781,204,700,432/381,621,785.74 - Step 6: Final answer
x = 292,681,878.70
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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.