Finding the Fourth Proportional to 215,811,246.30, 323,716,869.45 and 193,136,430.30
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Solution
The fourth proportional to 215,811,246.30, 323,716,869.45 and 193,136,430.30 is: 289,704,645.45
Step by Step Solution
- Step 1: Write the proportion equation
215,811,246.30 : 323,716,869.45 = 193,136,430.30 : x - Step 2: Convert to fraction form
215,811,246.30/323,716,869.45 = 193,136,430.30/x - Step 3: Cross multiply
215,811,246.30x = 323,716,869.45 × 193,136,430.30 - Step 4: Simplify right side
215,811,246.30x = 62,521,520,593,464,128 - Step 5: Solve for x
x = 62,521,520,593,464,128/215,811,246.30 - Step 6: Final answer
x = 289,704,645.45
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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.