Finding the Fourth Proportional to 286,713.70, 430,070.55 and 146,745.70
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Solution
The fourth proportional to 286,713.70, 430,070.55 and 146,745.70 is: 220,118.55
Step by Step Solution
- Step 1: Write the proportion equation
286,713.70 : 430,070.55 = 146,745.70 : x - Step 2: Convert to fraction form
286,713.70/430,070.55 = 146,745.70/x - Step 3: Cross multiply
286,713.70x = 430,070.55 × 146,745.70 - Step 4: Simplify right side
286,713.70x = 63,111,003,909.14 - Step 5: Solve for x
x = 63,111,003,909.14/286,713.70 - Step 6: Final answer
x = 220,118.55
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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.