Finding the Fourth Proportional to 202,129,331.40, 303,193,997.10 and 99,872,209.80
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Solution
The fourth proportional to 202,129,331.40, 303,193,997.10 and 99,872,209.80 is: 149,808,314.70
Step by Step Solution
- Step 1: Write the proportion equation
202,129,331.40 : 303,193,997.10 = 99,872,209.80 : x - Step 2: Convert to fraction form
202,129,331.40/303,193,997.10 = 99,872,209.80/x - Step 3: Cross multiply
202,129,331.40x = 303,193,997.10 × 99,872,209.80 - Step 4: Simplify right side
202,129,331.40x = 30,280,654,488,471,792 - Step 5: Solve for x
x = 30,280,654,488,471,792/202,129,331.40 - Step 6: Final answer
x = 149,808,314.70
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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.