Finding the Fourth Proportional to 291,299.70, 436,949.55 and 197,987.70
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Solution
The fourth proportional to 291,299.70, 436,949.55 and 197,987.70 is: 296,981.55
Step by Step Solution
- Step 1: Write the proportion equation
291,299.70 : 436,949.55 = 197,987.70 : x - Step 2: Convert to fraction form
291,299.70/436,949.55 = 197,987.70/x - Step 3: Cross multiply
291,299.70x = 436,949.55 × 197,987.70 - Step 4: Simplify right side
291,299.70x = 86,510,636,420.54 - Step 5: Solve for x
x = 86,510,636,420.54/291,299.70 - Step 6: Final answer
x = 296,981.55
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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.