Finding the Fourth Proportional to 351,985.08, 485,269.50 and 279,628.05
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Solution
The fourth proportional to 351,985.08, 485,269.50 and 279,628.05 is: 385,513.40
Step by Step Solution
- Step 1: Write the proportion equation
351,985.08 : 485,269.50 = 279,628.05 : x - Step 2: Convert to fraction form
351,985.08/485,269.50 = 279,628.05/x - Step 3: Cross multiply
351,985.08x = 485,269.50 × 279,628.05 - Step 4: Simplify right side
351,985.08x = 135,694,964,009.48 - Step 5: Solve for x
x = 135,694,964,009.48/351,985.08 - Step 6: Final answer
x = 385,513.40
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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.