Finding the Fourth Proportional to 639,959.77, 959,994.78 and 166,645.99
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Solution
The fourth proportional to 639,959.77, 959,994.78 and 166,645.99 is: 249,983.34
Step by Step Solution
- Step 1: Write the proportion equation
639,959.77 : 959,994.78 = 166,645.99 : x - Step 2: Convert to fraction form
639,959.77/959,994.78 = 166,645.99/x - Step 3: Cross multiply
639,959.77x = 959,994.78 × 166,645.99 - Step 4: Simplify right side
639,959.77x = 159,979,280,507.93 - Step 5: Solve for x
x = 159,979,280,507.93/639,959.77 - Step 6: Final answer
x = 249,983.34
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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.