Finding the Fourth Proportional to 338,954.68, 508,432.64 and 139,135.80
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Solution
The fourth proportional to 338,954.68, 508,432.64 and 139,135.80 is: 208,703.95
Step by Step Solution
- Step 1: Write the proportion equation
338,954.68 : 508,432.64 = 139,135.80 : x - Step 2: Convert to fraction form
338,954.68/508,432.64 = 139,135.80/x - Step 3: Cross multiply
338,954.68x = 508,432.64 × 139,135.80 - Step 4: Simplify right side
338,954.68x = 70,741,182,112.51 - Step 5: Solve for x
x = 70,741,182,112.51/338,954.68 - Step 6: Final answer
x = 208,703.95
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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.