Finding the Fourth Proportional to 279,527,809.09, 385,765,635.36 and 154,079,722.49
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Solution
The fourth proportional to 279,527,809.09, 385,765,635.36 and 154,079,722.49 is: 212,639,530.34
Step by Step Solution
- Step 1: Write the proportion equation
279,527,809.09 : 385,765,635.36 = 154,079,722.49 : x - Step 2: Convert to fraction form
279,527,809.09/385,765,635.36 = 154,079,722.49/x - Step 3: Cross multiply
279,527,809.09x = 385,765,635.36 × 154,079,722.49 - Step 4: Simplify right side
279,527,809.09x = 59,438,662,041,868,120 - Step 5: Solve for x
x = 59,438,662,041,868,120/279,527,809.09 - Step 6: Final answer
x = 212,639,530.34
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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.