Finding the Fourth Proportional to 411,699.20, 617,927.68 and 212,157.12
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Solution
The fourth proportional to 411,699.20, 617,927.68 and 212,157.12 is: 318,430.92
Step by Step Solution
- Step 1: Write the proportion equation
411,699.20 : 617,927.68 = 212,157.12 : x - Step 2: Convert to fraction form
411,699.20/617,927.68 = 212,157.12/x - Step 3: Cross multiply
411,699.20x = 617,927.68 × 212,157.12 - Step 4: Simplify right side
411,699.20x = 131,097,756,957.08 - Step 5: Solve for x
x = 131,097,756,957.08/411,699.20 - Step 6: Final answer
x = 318,430.92
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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.