Finding the Fourth Proportional to 247,139.21, 341,066.81 and 139,719.23
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Solution
The fourth proportional to 247,139.21, 341,066.81 and 139,719.23 is: 192,820.86
Step by Step Solution
- Step 1: Write the proportion equation
247,139.21 : 341,066.81 = 139,719.23 : x - Step 2: Convert to fraction form
247,139.21/341,066.81 = 139,719.23/x - Step 3: Cross multiply
247,139.21x = 341,066.81 × 139,719.23 - Step 4: Simplify right side
247,139.21x = 47,653,592,924.42 - Step 5: Solve for x
x = 47,653,592,924.42/247,139.21 - Step 6: Final answer
x = 192,820.86
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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.