Finding the Fourth Proportional to 221,656.99, 305,894.19 and 131,090.59
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Solution
The fourth proportional to 221,656.99, 305,894.19 and 131,090.59 is: 180,909.47
Step by Step Solution
- Step 1: Write the proportion equation
221,656.99 : 305,894.19 = 131,090.59 : x - Step 2: Convert to fraction form
221,656.99/305,894.19 = 131,090.59/x - Step 3: Cross multiply
221,656.99x = 305,894.19 × 131,090.59 - Step 4: Simplify right side
221,656.99x = 40,099,849,079.94 - Step 5: Solve for x
x = 40,099,849,079.94/221,656.99 - Step 6: Final answer
x = 180,909.47
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1.5x scale
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.