Finding the Fourth Proportional to 253,396.29, 349,671.81 and 138,652.05
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Solution
The fourth proportional to 253,396.29, 349,671.81 and 138,652.05 is: 191,331.58
Step by Step Solution
- Step 1: Write the proportion equation
253,396.29 : 349,671.81 = 138,652.05 : x - Step 2: Convert to fraction form
253,396.29/349,671.81 = 138,652.05/x - Step 3: Cross multiply
253,396.29x = 349,671.81 × 138,652.05 - Step 4: Simplify right side
253,396.29x = 48,482,713,283.71 - Step 5: Solve for x
x = 48,482,713,283.71/253,396.29 - Step 6: Final answer
x = 191,331.58
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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.