Finding the Fourth Proportional to 253,416.36, 349,715.50 and 137,129.83
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Solution
The fourth proportional to 253,416.36, 349,715.50 and 137,129.83 is: 189,239.66
Step by Step Solution
- Step 1: Write the proportion equation
253,416.36 : 349,715.50 = 137,129.83 : x - Step 2: Convert to fraction form
253,416.36/349,715.50 = 137,129.83/x - Step 3: Cross multiply
253,416.36x = 349,715.50 × 137,129.83 - Step 4: Simplify right side
253,416.36x = 47,956,426,280.14 - Step 5: Solve for x
x = 47,956,426,280.14/253,416.36 - Step 6: Final answer
x = 189,239.66
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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.