Finding the Fourth Proportional to 283,029.12, 390,577.12 and 155,704.80
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Solution
The fourth proportional to 283,029.12, 390,577.12 and 155,704.80 is: 214,870.94
Step by Step Solution
- Step 1: Write the proportion equation
283,029.12 : 390,577.12 = 155,704.80 : x - Step 2: Convert to fraction form
283,029.12/390,577.12 = 155,704.80/x - Step 3: Cross multiply
283,029.12x = 390,577.12 × 155,704.80 - Step 4: Simplify right side
283,029.12x = 60,814,732,354.18 - Step 5: Solve for x
x = 60,814,732,354.18/283,029.12 - Step 6: Final answer
x = 214,870.94
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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.