Finding the Fourth Proportional to 257,052.47, 354,720.74 and 142,322.99
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Solution
The fourth proportional to 257,052.47, 354,720.74 and 142,322.99 is: 196,399.26
Step by Step Solution
- Step 1: Write the proportion equation
257,052.47 : 354,720.74 = 142,322.99 : x - Step 2: Convert to fraction form
257,052.47/354,720.74 = 142,322.99/x - Step 3: Cross multiply
257,052.47x = 354,720.74 × 142,322.99 - Step 4: Simplify right side
257,052.47x = 50,484,913,846.59 - Step 5: Solve for x
x = 50,484,913,846.59/257,052.47 - Step 6: Final answer
x = 196,399.26
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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.