Finding the Fourth Proportional to 380,731.20, 570,405.60 and 310,228.80
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Solution
The fourth proportional to 380,731.20, 570,405.60 and 310,228.80 is: 464,779.99
Step by Step Solution
- Step 1: Write the proportion equation
380,731.20 : 570,405.60 = 310,228.80 : x - Step 2: Convert to fraction form
380,731.20/570,405.60 = 310,228.80/x - Step 3: Cross multiply
380,731.20x = 570,405.60 × 310,228.80 - Step 4: Simplify right side
380,731.20x = 176,956,244,801.28 - Step 5: Solve for x
x = 176,956,244,801.28/380,731.20 - Step 6: Final answer
x = 464,779.99
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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.