Finding the Fourth Proportional to 640,128.74, 960,242.12 and 190,815.26
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Solution
The fourth proportional to 640,128.74, 960,242.12 and 190,815.26 is: 286,237.50
Step by Step Solution
- Step 1: Write the proportion equation
640,128.74 : 960,242.12 = 190,815.26 : x - Step 2: Convert to fraction form
640,128.74/960,242.12 = 190,815.26/x - Step 3: Cross multiply
640,128.74x = 960,242.12 × 190,815.26 - Step 4: Simplify right side
640,128.74x = 183,228,849,790.75 - Step 5: Solve for x
x = 183,228,849,790.75/640,128.74 - Step 6: Final answer
x = 286,237.50
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1.5x scale
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.