Finding the Fourth Proportional to 286,828.56, 430,438.86 and 99,840.06
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Solution
The fourth proportional to 286,828.56, 430,438.86 and 99,840.06 is: 149,828.32
Step by Step Solution
- Step 1: Write the proportion equation
286,828.56 : 430,438.86 = 99,840.06 : x - Step 2: Convert to fraction form
286,828.56/430,438.86 = 99,840.06/x - Step 3: Cross multiply
286,828.56x = 430,438.86 × 99,840.06 - Step 4: Simplify right side
286,828.56x = 42,975,041,608.73 - Step 5: Solve for x
x = 42,975,041,608.73/286,828.56 - Step 6: Final answer
x = 149,828.32
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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.