Finding the Fourth Proportional to 318,553,259,939.60, 439,603,675,093.32 and 172,065,720,678.99
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Solution
The fourth proportional to 318,553,259,939.60, 439,603,675,093.32 and 172,065,720,678.99 is: 237,450,789,806.41
Step by Step Solution
- Step 1: Write the proportion equation
318,553,259,939.60 : 439,603,675,093.32 = 172,065,720,678.99 : x - Step 2: Convert to fraction form
318,553,259,939.60/439,603,675,093.32 = 172,065,720,678.99/x - Step 3: Cross multiply
318,553,259,939.60x = 439,603,675,093.32 × 172,065,720,678.99 - Step 4: Simplify right side
318,553,259,939.60x = 75,640,723,168,064,662,667,264 - Step 5: Solve for x
x = 75,640,723,168,064,662,667,264/318,553,259,939.60 - Step 6: Final answer
x = 237,450,789,806.41
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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.