Finding the Fourth Proportional to 172,465,385.80, 258,698,078.70 and 155,459,273.80
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Solution
The fourth proportional to 172,465,385.80, 258,698,078.70 and 155,459,273.80 is: 233,188,910.70
Step by Step Solution
- Step 1: Write the proportion equation
172,465,385.80 : 258,698,078.70 = 155,459,273.80 : x - Step 2: Convert to fraction form
172,465,385.80/258,698,078.70 = 155,459,273.80/x - Step 3: Cross multiply
172,465,385.80x = 258,698,078.70 × 155,459,273.80 - Step 4: Simplify right side
172,465,385.80x = 40,217,015,448,157,248 - Step 5: Solve for x
x = 40,217,015,448,157,248/172,465,385.80 - Step 6: Final answer
x = 233,188,910.70
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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.