Finding the Fourth Proportional to 246,637.20, 369,955.80 and 128,539.20
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Solution
The fourth proportional to 246,637.20, 369,955.80 and 128,539.20 is: 192,808.80
Step by Step Solution
- Step 1: Write the proportion equation
246,637.20 : 369,955.80 = 128,539.20 : x - Step 2: Convert to fraction form
246,637.20/369,955.80 = 128,539.20/x - Step 3: Cross multiply
246,637.20x = 369,955.80 × 128,539.20 - Step 4: Simplify right side
246,637.20x = 47,553,822,567.36 - Step 5: Solve for x
x = 47,553,822,567.36/246,637.20 - Step 6: Final answer
x = 192,808.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.