Finding the Fourth Proportional to 291,987.75, 402,943.50 and 157,851.75
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Solution
The fourth proportional to 291,987.75, 402,943.50 and 157,851.75 is: 217,835.63
Step by Step Solution
- Step 1: Write the proportion equation
291,987.75 : 402,943.50 = 157,851.75 : x - Step 2: Convert to fraction form
291,987.75/402,943.50 = 157,851.75/x - Step 3: Cross multiply
291,987.75x = 402,943.50 × 157,851.75 - Step 4: Simplify right side
291,987.75x = 63,605,336,626.13 - Step 5: Solve for x
x = 63,605,336,626.13/291,987.75 - Step 6: Final answer
x = 217,835.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.