Finding the Fourth Proportional to 355,453,029.69, 490,526,955.57 and 198,820,136.26
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Solution
The fourth proportional to 355,453,029.69, 490,526,955.57 and 198,820,136.26 is: 274,372,780.65
Step by Step Solution
- Step 1: Write the proportion equation
355,453,029.69 : 490,526,955.57 = 198,820,136.26 : x - Step 2: Convert to fraction form
355,453,029.69/490,526,955.57 = 198,820,136.26/x - Step 3: Cross multiply
355,453,029.69x = 490,526,955.57 × 198,820,136.26 - Step 4: Simplify right side
355,453,029.69x = 97,526,636,145,630,352 - Step 5: Solve for x
x = 97,526,636,145,630,352/355,453,029.69 - Step 6: Final answer
x = 274,372,780.65
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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.