Finding the Fourth Proportional to 386,753.64, 533,709.78 and 214,671.12
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Solution
The fourth proportional to 386,753.64, 533,709.78 and 214,671.12 is: 296,240.45
Step by Step Solution
- Step 1: Write the proportion equation
386,753.64 : 533,709.78 = 214,671.12 : x - Step 2: Convert to fraction form
386,753.64/533,709.78 = 214,671.12/x - Step 3: Cross multiply
386,753.64x = 533,709.78 × 214,671.12 - Step 4: Simplify right side
386,753.64x = 114,572,073,421.13 - Step 5: Solve for x
x = 114,572,073,421.13/386,753.64 - Step 6: Final answer
x = 296,240.45
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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.