Finding the Fourth Proportional to 430,816.96, 646,318.65 and 131,289.62
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Solution
The fourth proportional to 430,816.96, 646,318.65 and 131,289.62 is: 196,962.84
Step by Step Solution
- Step 1: Write the proportion equation
430,816.96 : 646,318.65 = 131,289.62 : x - Step 2: Convert to fraction form
430,816.96/646,318.65 = 131,289.62/x - Step 3: Cross multiply
430,816.96x = 646,318.65 × 131,289.62 - Step 4: Simplify right side
430,816.96x = 84,854,929,957.41 - Step 5: Solve for x
x = 84,854,929,957.41/430,816.96 - Step 6: Final answer
x = 196,962.84
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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.