Finding the Fourth Proportional to 387,389.05, 580,750.74 and 134,636.70
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Solution
The fourth proportional to 387,389.05, 580,750.74 and 134,636.70 is: 201,839.37
Step by Step Solution
- Step 1: Write the proportion equation
387,389.05 : 580,750.74 = 134,636.70 : x - Step 2: Convert to fraction form
387,389.05/580,750.74 = 134,636.70/x - Step 3: Cross multiply
387,389.05x = 580,750.74 × 134,636.70 - Step 4: Simplify right side
387,389.05x = 78,190,363,156.16 - Step 5: Solve for x
x = 78,190,363,156.16/387,389.05 - Step 6: Final answer
x = 201,839.37
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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.