Finding the Fourth Proportional to 328,468,740.30, 453,307,903.47 and 189,236,971.98
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Solution
The fourth proportional to 328,468,740.30, 453,307,903.47 and 189,236,971.98 is: 261,159,143.94
Step by Step Solution
- Step 1: Write the proportion equation
328,468,740.30 : 453,307,903.47 = 189,236,971.98 : x - Step 2: Convert to fraction form
328,468,740.30/453,307,903.47 = 189,236,971.98/x - Step 3: Cross multiply
328,468,740.30x = 453,307,903.47 × 189,236,971.98 - Step 4: Simplify right side
328,468,740.30x = 85,782,615,027,264,928 - Step 5: Solve for x
x = 85,782,615,027,264,928/328,468,740.30 - Step 6: Final answer
x = 261,159,143.94
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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.