Finding the Fourth Proportional to 402,141.36, 603,213.12 and 135,830.64
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Solution
The fourth proportional to 402,141.36, 603,213.12 and 135,830.64 is: 203,746.32
Step by Step Solution
- Step 1: Write the proportion equation
402,141.36 : 603,213.12 = 135,830.64 : x - Step 2: Convert to fraction form
402,141.36/603,213.12 = 135,830.64/x - Step 3: Cross multiply
402,141.36x = 603,213.12 × 135,830.64 - Step 4: Simplify right side
402,141.36x = 81,934,824,146.00 - Step 5: Solve for x
x = 81,934,824,146.00/402,141.36 - Step 6: Final answer
x = 203,746.32
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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.