Finding the Fourth Proportional to 286,980.44, 430,485.96 and 87,285.56
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Solution
The fourth proportional to 286,980.44, 430,485.96 and 87,285.56 is: 130,932.99
Step by Step Solution
- Step 1: Write the proportion equation
286,980.44 : 430,485.96 = 87,285.56 : x - Step 2: Convert to fraction form
286,980.44/430,485.96 = 87,285.56/x - Step 3: Cross multiply
286,980.44x = 430,485.96 × 87,285.56 - Step 4: Simplify right side
286,980.44x = 37,575,208,090.74 - Step 5: Solve for x
x = 37,575,208,090.74/286,980.44 - Step 6: Final answer
x = 130,932.99
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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.