Finding the Fourth Proportional to 268,272,031.20, 402,408,046.80 and 76,795,807.20
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Solution
The fourth proportional to 268,272,031.20, 402,408,046.80 and 76,795,807.20 is: 115,193,710.80
Step by Step Solution
- Step 1: Write the proportion equation
268,272,031.20 : 402,408,046.80 = 76,795,807.20 : x - Step 2: Convert to fraction form
268,272,031.20/402,408,046.80 = 76,795,807.20/x - Step 3: Cross multiply
268,272,031.20x = 402,408,046.80 × 76,795,807.20 - Step 4: Simplify right side
268,272,031.20x = 30,903,250,777,781,380 - Step 5: Solve for x
x = 30,903,250,777,781,380/268,272,031.20 - Step 6: Final answer
x = 115,193,710.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.