Finding the Fourth Proportional to 318,553,259,949.22, 439,603,675,106.62 and 172,065,720,688.62
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Solution
The fourth proportional to 318,553,259,949.22, 439,603,675,106.62 and 172,065,720,688.62 is: 237,450,789,819.71
Step by Step Solution
- Step 1: Write the proportion equation
318,553,259,949.22 : 439,603,675,106.62 = 172,065,720,688.62 : x - Step 2: Convert to fraction form
318,553,259,949.22/439,603,675,106.62 = 172,065,720,688.62/x - Step 3: Cross multiply
318,553,259,949.22x = 439,603,675,106.62 × 172,065,720,688.62 - Step 4: Simplify right side
318,553,259,949.22x = 75,640,723,174,586,520,174,592 - Step 5: Solve for x
x = 75,640,723,174,586,520,174,592/318,553,259,949.22 - Step 6: Final answer
x = 237,450,789,819.71
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.