Finding the Fourth Proportional to 286,867.01, 395,884.05 and 157,808.90
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Solution
The fourth proportional to 286,867.01, 395,884.05 and 157,808.90 is: 217,780.45
Step by Step Solution
- Step 1: Write the proportion equation
286,867.01 : 395,884.05 = 157,808.90 : x - Step 2: Convert to fraction form
286,867.01/395,884.05 = 157,808.90/x - Step 3: Cross multiply
286,867.01x = 395,884.05 × 157,808.90 - Step 4: Simplify right side
286,867.01x = 62,474,026,458.05 - Step 5: Solve for x
x = 62,474,026,458.05/286,867.01 - Step 6: Final answer
x = 217,780.45
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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.