Finding the Fourth Proportional to 318,487,050.55, 439,285,728.36 and 212,587,072.75
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Solution
The fourth proportional to 318,487,050.55, 439,285,728.36 and 212,587,072.75 is: 293,219,039.62
Step by Step Solution
- Step 1: Write the proportion equation
318,487,050.55 : 439,285,728.36 = 212,587,072.75 : x - Step 2: Convert to fraction form
318,487,050.55/439,285,728.36 = 212,587,072.75/x - Step 3: Cross multiply
318,487,050.55x = 439,285,728.36 × 212,587,072.75 - Step 4: Simplify right side
318,487,050.55x = 93,386,467,092,904,064 - Step 5: Solve for x
x = 93,386,467,092,904,064/318,487,050.55 - Step 6: Final answer
x = 293,219,039.62
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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.