Finding the Fourth Proportional to 405,237.21, 607,312.44 and 315,388.40
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Solution
The fourth proportional to 405,237.21, 607,312.44 and 315,388.40 is: 472,659.69
Step by Step Solution
- Step 1: Write the proportion equation
405,237.21 : 607,312.44 = 315,388.40 : x - Step 2: Convert to fraction form
405,237.21/607,312.44 = 315,388.40/x - Step 3: Cross multiply
405,237.21x = 607,312.44 × 315,388.40 - Step 4: Simplify right side
405,237.21x = 191,539,295,715.13 - Step 5: Solve for x
x = 191,539,295,715.13/405,237.21 - Step 6: Final answer
x = 472,659.69
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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.