Finding the Fourth Proportional to 215,064,658.80, 322,596,988.20 and 71,457,490.80
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Solution
The fourth proportional to 215,064,658.80, 322,596,988.20 and 71,457,490.80 is: 107,186,236.20
Step by Step Solution
- Step 1: Write the proportion equation
215,064,658.80 : 322,596,988.20 = 71,457,490.80 : x - Step 2: Convert to fraction form
215,064,658.80/322,596,988.20 = 71,457,490.80/x - Step 3: Cross multiply
215,064,658.80x = 322,596,988.20 × 71,457,490.80 - Step 4: Simplify right side
215,064,658.80x = 23,051,971,316,409,208 - Step 5: Solve for x
x = 23,051,971,316,409,208/215,064,658.80 - Step 6: Final answer
x = 107,186,236.20
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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.