Finding the Fourth Proportional to 395,405,957.27, 545,660,209.24 and 219,193,506.11
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Solution
The fourth proportional to 395,405,957.27, 545,660,209.24 and 219,193,506.11 is: 302,487,031.89
Step by Step Solution
- Step 1: Write the proportion equation
395,405,957.27 : 545,660,209.24 = 219,193,506.11 : x - Step 2: Convert to fraction form
395,405,957.27/545,660,209.24 = 219,193,506.11/x - Step 3: Cross multiply
395,405,957.27x = 545,660,209.24 × 219,193,506.11 - Step 4: Simplify right side
395,405,957.27x = 119,605,174,408,847,984 - Step 5: Solve for x
x = 119,605,174,408,847,984/395,405,957.27 - Step 6: Final answer
x = 302,487,031.89
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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.