Finding the Fourth Proportional to 320,722.68, 442,604.52 and 207,742.08
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Solution
The fourth proportional to 320,722.68, 442,604.52 and 207,742.08 is: 286,688.75
Step by Step Solution
- Step 1: Write the proportion equation
320,722.68 : 442,604.52 = 207,742.08 : x - Step 2: Convert to fraction form
320,722.68/442,604.52 = 207,742.08/x - Step 3: Cross multiply
320,722.68x = 442,604.52 × 207,742.08 - Step 4: Simplify right side
320,722.68x = 91,947,583,602.20 - Step 5: Solve for x
x = 91,947,583,602.20/320,722.68 - Step 6: Final answer
x = 286,688.75
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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.