Finding the Fourth Proportional to 257,199.79, 354,931.87 and 142,478.08
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Solution
The fourth proportional to 257,199.79, 354,931.87 and 142,478.08 is: 196,617.62
Step by Step Solution
- Step 1: Write the proportion equation
257,199.79 : 354,931.87 = 142,478.08 : x - Step 2: Convert to fraction form
257,199.79/354,931.87 = 142,478.08/x - Step 3: Cross multiply
257,199.79x = 354,931.87 × 142,478.08 - Step 4: Simplify right side
257,199.79x = 50,570,011,368.41 - Step 5: Solve for x
x = 50,570,011,368.41/257,199.79 - Step 6: Final answer
x = 196,617.62
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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.