Finding the Fourth Proportional to 165,192,431.80, 247,788,647.70 and 138,318,575.80
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Solution
The fourth proportional to 165,192,431.80, 247,788,647.70 and 138,318,575.80 is: 207,477,863.70
Step by Step Solution
- Step 1: Write the proportion equation
165,192,431.80 : 247,788,647.70 = 138,318,575.80 : x - Step 2: Convert to fraction form
165,192,431.80/247,788,647.70 = 138,318,575.80/x - Step 3: Cross multiply
165,192,431.80x = 247,788,647.70 × 138,318,575.80 - Step 4: Simplify right side
165,192,431.80x = 34,273,772,849,271,948 - Step 5: Solve for x
x = 34,273,772,849,271,948/165,192,431.80 - Step 6: Final answer
x = 207,477,863.70
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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.