Finding the Fourth Proportional to 213,715,308.70, 320,572,963.05 and 201,811,030.30
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Solution
The fourth proportional to 213,715,308.70, 320,572,963.05 and 201,811,030.30 is: 302,716,545.45
Step by Step Solution
- Step 1: Write the proportion equation
213,715,308.70 : 320,572,963.05 = 201,811,030.30 : x - Step 2: Convert to fraction form
213,715,308.70/320,572,963.05 = 201,811,030.30/x - Step 3: Cross multiply
213,715,308.70x = 320,572,963.05 × 201,811,030.30 - Step 4: Simplify right side
213,715,308.70x = 64,695,159,959,444,336 - Step 5: Solve for x
x = 64,695,159,959,444,336/213,715,308.70 - Step 6: Final answer
x = 302,716,545.45
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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.