Finding the Fourth Proportional to 391,774.36, 587,316.88 and 155,283.04
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Solution
The fourth proportional to 391,774.36, 587,316.88 and 155,283.04 is: 232,787.95
Step by Step Solution
- Step 1: Write the proportion equation
391,774.36 : 587,316.88 = 155,283.04 : x - Step 2: Convert to fraction form
391,774.36/587,316.88 = 155,283.04/x - Step 3: Cross multiply
391,774.36x = 587,316.88 × 155,283.04 - Step 4: Simplify right side
391,774.36x = 91,200,350,569.72 - Step 5: Solve for x
x = 91,200,350,569.72/391,774.36 - Step 6: Final answer
x = 232,787.95
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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.