Finding the Fourth Proportional to 388,364.19, 536,107.76 and 261,113.55
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Solution
The fourth proportional to 388,364.19, 536,107.76 and 261,113.55 is: 360,447.75
Step by Step Solution
- Step 1: Write the proportion equation
388,364.19 : 536,107.76 = 261,113.55 : x - Step 2: Convert to fraction form
388,364.19/536,107.76 = 261,113.55/x - Step 3: Cross multiply
388,364.19x = 536,107.76 × 261,113.55 - Step 4: Simplify right side
388,364.19x = 139,984,999,090.58 - Step 5: Solve for x
x = 139,984,999,090.58/388,364.19 - Step 6: Final answer
x = 360,447.75
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1.5x scale
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.