Finding the Fourth Proportional to 217,749,781.80, 326,624,672.70 and 137,128,213.80
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Solution
The fourth proportional to 217,749,781.80, 326,624,672.70 and 137,128,213.80 is: 205,692,320.70
Step by Step Solution
- Step 1: Write the proportion equation
217,749,781.80 : 326,624,672.70 = 137,128,213.80 : x - Step 2: Convert to fraction form
217,749,781.80/326,624,672.70 = 137,128,213.80/x - Step 3: Cross multiply
217,749,781.80x = 326,624,672.70 × 137,128,213.80 - Step 4: Simplify right side
217,749,781.80x = 44,789,457,950,360,624 - Step 5: Solve for x
x = 44,789,457,950,360,624/217,749,781.80 - Step 6: Final answer
x = 205,692,320.70
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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.