Finding the Fourth Proportional to 353,215,525.76, 487,432,567.20 and 196,582,607.68
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Solution
The fourth proportional to 353,215,525.76, 487,432,567.20 and 196,582,607.68 is: 271,281,294.68
Step by Step Solution
- Step 1: Write the proportion equation
353,215,525.76 : 487,432,567.20 = 196,582,607.68 : x - Step 2: Convert to fraction form
353,215,525.76/487,432,567.20 = 196,582,607.68/x - Step 3: Cross multiply
353,215,525.76x = 487,432,567.20 × 196,582,607.68 - Step 4: Simplify right side
353,215,525.76x = 95,820,765,128,332,832 - Step 5: Solve for x
x = 95,820,765,128,332,832/353,215,525.76 - Step 6: Final answer
x = 271,281,294.68
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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.