Finding the Fourth Proportional to 279,765,478.68, 386,076,732.48 and 154,314,861.24
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Solution
The fourth proportional to 279,765,478.68, 386,076,732.48 and 154,314,861.24 is: 212,954,713.65
Step by Step Solution
- Step 1: Write the proportion equation
279,765,478.68 : 386,076,732.48 = 154,314,861.24 : x - Step 2: Convert to fraction form
279,765,478.68/386,076,732.48 = 154,314,861.24/x - Step 3: Cross multiply
279,765,478.68x = 386,076,732.48 × 154,314,861.24 - Step 4: Simplify right side
279,765,478.68x = 59,577,377,400,643,808 - Step 5: Solve for x
x = 59,577,377,400,643,808/279,765,478.68 - Step 6: Final answer
x = 212,954,713.65
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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.