Finding the Fourth Proportional to 385,666,788.16, 532,252,991.08 and 218,432,798.96
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Solution
The fourth proportional to 385,666,788.16, 532,252,991.08 and 218,432,798.96 is: 301,455,852.99
Step by Step Solution
- Step 1: Write the proportion equation
385,666,788.16 : 532,252,991.08 = 218,432,798.96 : x - Step 2: Convert to fraction form
385,666,788.16/532,252,991.08 = 218,432,798.96/x - Step 3: Cross multiply
385,666,788.16x = 532,252,991.08 × 218,432,798.96 - Step 4: Simplify right side
385,666,788.16x = 116,261,510,596,436,320 - Step 5: Solve for x
x = 116,261,510,596,436,320/385,666,788.16 - Step 6: Final answer
x = 301,455,852.99
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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.