Finding the Fourth Proportional to 411,682.70, 617,487.60 and 145,430.03
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Solution
The fourth proportional to 411,682.70, 617,487.60 and 145,430.03 is: 218,132.17
Step by Step Solution
- Step 1: Write the proportion equation
411,682.70 : 617,487.60 = 145,430.03 : x - Step 2: Convert to fraction form
411,682.70/617,487.60 = 145,430.03/x - Step 3: Cross multiply
411,682.70x = 617,487.60 × 145,430.03 - Step 4: Simplify right side
411,682.70x = 89,801,242,281.71 - Step 5: Solve for x
x = 89,801,242,281.71/411,682.70 - Step 6: Final answer
x = 218,132.17
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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.