Finding the Fourth Proportional to 331,994,972.80, 497,992,459.20 and 159,430,175.20
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Solution
The fourth proportional to 331,994,972.80, 497,992,459.20 and 159,430,175.20 is: 239,145,262.80
Step by Step Solution
- Step 1: Write the proportion equation
331,994,972.80 : 497,992,459.20 = 159,430,175.20 : x - Step 2: Convert to fraction form
331,994,972.80/497,992,459.20 = 159,430,175.20/x - Step 3: Cross multiply
331,994,972.80x = 497,992,459.20 × 159,430,175.20 - Step 4: Simplify right side
331,994,972.80x = 79,395,025,018,534,848 - Step 5: Solve for x
x = 79,395,025,018,534,848/331,994,972.80 - Step 6: Final answer
x = 239,145,262.80
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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.