Finding the Fourth Proportional to 243,493,405.55, 336,011,897.49 and 131,981,852.18
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Solution
The fourth proportional to 243,493,405.55, 336,011,897.49 and 131,981,852.18 is: 182,130,076.52
Step by Step Solution
- Step 1: Write the proportion equation
243,493,405.55 : 336,011,897.49 = 131,981,852.18 : x - Step 2: Convert to fraction form
243,493,405.55/336,011,897.49 = 131,981,852.18/x - Step 3: Cross multiply
243,493,405.55x = 336,011,897.49 × 131,981,852.18 - Step 4: Simplify right side
243,493,405.55x = 44,347,472,583,566,432 - Step 5: Solve for x
x = 44,347,472,583,566,432/243,493,405.55 - Step 6: Final answer
x = 182,130,076.52
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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.