Finding the Fourth Proportional to 286,866.77, 395,890.13 and 159,539.63
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Solution
The fourth proportional to 286,866.77, 395,890.13 and 159,539.63 is: 220,172.47
Step by Step Solution
- Step 1: Write the proportion equation
286,866.77 : 395,890.13 = 159,539.63 : x - Step 2: Convert to fraction form
286,866.77/395,890.13 = 159,539.63/x - Step 3: Cross multiply
286,866.77x = 395,890.13 × 159,539.63 - Step 4: Simplify right side
286,866.77x = 63,160,163,280.25 - Step 5: Solve for x
x = 63,160,163,280.25/286,866.77 - Step 6: Final answer
x = 220,172.47
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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.