Finding the Fourth Proportional to 213,624,221.80, 320,436,332.70 and 141,820,637.80
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Solution
The fourth proportional to 213,624,221.80, 320,436,332.70 and 141,820,637.80 is: 212,730,956.70
Step by Step Solution
- Step 1: Write the proportion equation
213,624,221.80 : 320,436,332.70 = 141,820,637.80 : x - Step 2: Convert to fraction form
213,624,221.80/320,436,332.70 = 141,820,637.80/x - Step 3: Cross multiply
213,624,221.80x = 320,436,332.70 × 141,820,637.80 - Step 4: Simplify right side
213,624,221.80x = 45,444,485,077,807,000 - Step 5: Solve for x
x = 45,444,485,077,807,000/213,624,221.80 - Step 6: Final answer
x = 212,730,956.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.