Finding the Fourth Proportional to 421,036.05, 631,554.08 and 121,526.40
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Solution
The fourth proportional to 421,036.05, 631,554.08 and 121,526.40 is: 182,289.60
Step by Step Solution
- Step 1: Write the proportion equation
421,036.05 : 631,554.08 = 121,526.40 : x - Step 2: Convert to fraction form
421,036.05/631,554.08 = 121,526.40/x - Step 3: Cross multiply
421,036.05x = 631,554.08 × 121,526.40 - Step 4: Simplify right side
421,036.05x = 76,750,493,140.08 - Step 5: Solve for x
x = 76,750,493,140.08/421,036.05 - Step 6: Final answer
x = 182,289.60
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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.